Polar H7 Bluetooth Low Power Heart Rate Monitor In Depth Review


Today we are continuing on our  journey to learn more about heart rate monitors, and the best way to choose the right one. Today we review the Polar H7 Low Power Bluetooth 4.0 Heart Rate Monitor. If you want to check out reviews of other Bluetooth Low Energy heart rate monitor straps, check them out here.


Before we get started, we should probably have a quick discussion about Bluetooth Low Energy. So what is Bluetooth Low Energy?  Bluetooth Low Energy is a feature of the latest Bluetooth specification, Bluetooth 4.0. Different manufacturers call it by different names; Bluetooth Low Power, Bluetooth Low Energy, and Bluetooth 4.0. Thew advantages of Bluetooth Low Power is that they consume a fraction of the power of  classic Bluetooth products. So why should you care? Because products that use this new Bluetooth protocol may not be compatible with old phones. As an example, the Polar H7, which uses Bluetooth Low Energy (which we will call BLE from now on), is only compatible with the iPhone 4S, 5 and 6 series, and the Samsung Galaxy phones (see update below). So even though all other smart phones have built in Bluetooth, those phones are not compatible with the Polar H7. To solve this problem, Polar makes two versions of Bluetooth heart rate monitors. Polar makes the Polar H7, and the Polar Wearlink+ heart rate monitor straps.

Updated February 12, 2016:

The Polar H7 is compatible with the following Smartphones:

  • iPad (3rd & 4th generation, Mini, Air & Pro)
  • iPhone 4S
  • iPhone 5
  • iPhone 5C
  • iPhone 5S
  • iPhone 6
  • iPhone 6S
  • iPod touch (5th generation)
  • Samsung Galaxy S3 with Android 4.3 or later
  • Samsung Galaxy S4 with Android 4.3 or later
  • Samsung Galaxy Note II with Android 4.3 or later
  • Samsung Galaxy Note 3 with Android 4.3 or later
  • LG Nexus 5 with Android 4.3 or later

It is also compatible with the following Polar watches: FT1, FT2, FT4, FT7, FT40, FT60, FT80, RS100, RS300X, RS400, RCX5, CS100, CS200, CS300.

The WearLink+ with Bluetooth heart rate sensor is compatible with the following phones:

Android phones:

  • HTC Wildfire S, Desire S, Sensation XE, One SV (LTE)
  • Samsung Galaxy S4 GT-I9505, Galaxy Ace S5830i, Galaxy Gio GT-S5660, Galaxy S i9000, Galaxy Y GT-S5360, Galaxy Xcover GT-S5690, Galaxy Mini GT-S5570
  • LG Thrill

Symbian phones:

  • Nokia 5230, 5530 OMU, 5530 XpressMusic, 5630, 5630 OMU, 5700 XpressMusic, 6110 Navigatori, 6290, 6700 slide, 6710 Navigatori, 6760 slide, C5-00, C5-03, C6-00, C6-01, C7-00, E5, E52, E63, E66, E7-00, E71, E72, N76, N8-00, N97 mini, N97 mini OMU, X6 OMU

You can see that the Polar Wearlink+ is compatible with HTC, Samsung, Nokia and LG phones.  This review will cover the Polar H7, connected to an Apple iPhone 4S.

There is also a new heart rate monitor strap from Polar, the Polar H6. The major difference between the two is that the Polar H6 only works with iPhones and some Android devices, whereas the H7 works with iPhones, other Polar products, and compatible gym equipment. You can see the difference at our comparison: Polar H6 and H7 Heart Rate Sensors – What Is the Difference?

What’s in the box?

Here is the product box:

Here’s what is inside the box:

The product includes the Bluetooth heart rate monitor strap, transmitter, manual, and box.


So what are the features and specs?

The Polar H7 heart rate sensor is designed to be used with a smart phone, or connected to one of the Polar training computers. The features are shown below:

  • Compatible with phones listed above
  • Bluetooth Low Energy transmission
  • Compatible with Polar training computers, including the FT series, RS100, RS200, RS300, RS400, CS100, CS200, CS300, and RCX5
  • Also compatible with Polar compatible gym equipment using the 5 Khz coded protocol
  • Can transmit up to 30 feet
  • Battery life up to 350 hours
  • User replaceable battery CR2025
  • Soft, washable strap


Using the Polar H7

Before I could use the strap, I needed to decide what software I would use to log my workouts. I found that Endomondo and CardioMapper work, but I also found a trick on the internet that will get you up and running with Runkeeper. It seemed to work for me. Here is the video:

I used the Polar H7 with MapMyRun, RunKeeper, and Endomondo. It worked well with all three apps. I have included a few screen shots for fun:

The strap connected to all three apps, but to get it to work with RunKeeper, I needed to follow the video shown above. The strap felt great and worked well, with no dropouts or issues.

Thoughts, Opinions and Summary:

So, after using it for a while, what did I think of the hardware? The device paired easily, and the strap felt good. As is typical, I wore the strap for the day to gauge its comfort. I also used it during workouts, and it definitely felt as comfortable as any strap on the market. The Bluetooth connection was great, with no signal or dropout issues noticed in my data. I think as time goes on, more applications will support the Bluetooth Low Power heart rate monitors. Claimed battery life is better for the BLE heart rate straps than the standard Bluetooth HRM’s, but we have not verified the battery life of the Polar H7.



  • The connection was great.
  • The strap was soft and comfortable.
  • Claimed battery life is excellent for a Bluetooth HRM.
  • Works with other Polar training computers and gym equipment using the built in 5KHz radio.



  • As with any phone application, all of the data that is based on GPS location information, such as speed and distance, is only as good as the GPS capabilities of the phone. The iPhone is pretty good, but not as good as a good GPS HRM watch.
So would I recommend the Polar H7 Bluetooth Low Energy HRM? Definitely. If you are using an iPhone 4S or later, this is the HRM to buy. The retail price of the Polar H7 is $79.95.

Added May 14th, 2012

Last week, we reviewed the Polar H7 Bluetooth Low Energy heart rate monitor strap. This is a followup to that review. The review can be found here.

We have had many readers want more information on the Polar H7 Bluetooth Low Energy heart rate monitor strap. One of the biggest questions that readers have is, “Which iPhone apps work with the Polar H7?” So we set out to check all of the most popular apps that are out there. On the iPhone 4s, the apps that we test most often are:

  • RunKeeper
  • SportsTracker
  • WahooFitness
  • MapMyRun
  • MapMyRun+
  • EndoMondo
  • Endomondo Pro
  • iSmoothRun
  • MapMyRide
  • MapMyRide+
  • runtastic
  • Runmeter
  • Jog Log
  • LogYourRun
  • Garmin Fit
  • HRV Plus
  • Strava
  • RunKeeper
  • micoach

So,…….the answer is………..all of them but SportsTracker and Garmin Fit. Of course, SportsTracker and Garmin Fit both sell their own hardware.

Here are images of all of the apps that work with the Polar H7. You can see the heart rate displayed on the screen for each app:

RunKeeper and WahooFitness

MapMyRun and MapMyRun+

Endomondo and Endomondo Pro

MapMyRide and MapMyRide+

runtastic and Runmeter

Jog Log and LogYourRun


iSmoothRun and HRV+ 

StravaRunKeeperStrava and RunKeeper


So the bottom line – I was pretty amazed that I could get all of these apps to work with the Polar H7.

If you have any other apps that you want us to try, just leave us a comment, or send us an email and we’ll check ’em out.

Happy Training!

  81 Responses to “Polar H7 Bluetooth Low Power Heart Rate Monitor In Depth Review”

  1. I needed a spare transmitter for my Polar FT7 watch, so I bought the H7, knowing that it doesn’t work with iPhone 4. While I’m waiting for iPhone 5, I thought I’d use the H7 with my iPad 3. Even though everything I’ve read says that iPad 3 is Bluetooth 4.0, I can’t get the H7 to sync. What gives?

    • Robert,

      I also had a problem with apps that worked on the iPhone. I was able to get Runmeter and WahooFitness to work. I tried about 10 other apps, and couldn’t get them to work. I’m not sure what’s up. I will let you know if I find out more. Let me know the same.



    • My H7 linked to iPad 3 for a couple of workouts using DigiFit. (great app) After a couple of days, it stopped working in Bluetooth Low Energy. None of the apps link now. I’ve tried several different apps. The H7 doesn’t even show up under iPad setting, so I think it is a problem not limited to the app.

      Like Robert, I bought the H7 to use as a spare HRM for my FT40. Was planning to use it most with the new iPhone since i have a 4 and not a 4S currently. Works fine in Polar xmit mode.

  2. Another app to check is Digifit. I use this app a lot for my gym workouts and when I walk outside. I would like to know how the h7 works with the Digifit app.



    • Terri,

      I tried Digifit with the Polar H7 on the iPhone 4S. Digifit says that it is still in Beta with Bluetooth 4.0, but it works just fine. We have added Digifit to the list of apps that we want to review in the coming months. To use Digifit a Bluetooth 4.0 HRM, there is a charge from Digfit of $2.99. Have fun with the HRM and app. (Don’t forget that you need the 4S to work with the Polar H7).

  3. Your Comment

  4. I’m looking for a good way to get an accurate handle on the calories I burn throughout the day. I had a fitbit, but often suspected I wasn’t getting entirely accurate numbers. If I wear the monitor during all waking hours (and not just while working out) will it work continuously to give me an accurate calorie read? I only want to do this for a few days to get a better feel for my actual calorie burn on workout days vs days at home chasing children…..

    Any thoughts you have on this would be appreciated.

    Thank you.

  5. […] Polar WearLink+ Bluetooth Heart Rate Monitor In Depth Review Jun 012012   We are continuing on our  journey to learn more about heart rate monitors, and the best way to choose the right one. Today we are reviewing the Polar Wearlink+ Bluetooth heart rate monitor. The Wearlink+ Bluetooth is made to work with Android phones. If you are looking for a Polar heart rate monitor that works with the iPhone 4S, check out our review of the Polar H7 Bluetooth Low Energy Heart Rate Monitor In-Depth Review. […]

  6. Hi,

    Thanks for the review.

    Is the Polar H7 better than the Wahoo Fitness Blue HR?

  7. Hi,

    Do you know if the H7 HRM works with BikeBrain? I have just started using this app and really like the interface.

    Thank you for the review.

  8. I have this HRM and it works well for me. LIke Peterdoes, I don’t need bells and whistles, so the FT7 is a good value for me. The only coalmpint I have is that the FT7 didn’t come with a decent instruction booklet. Instead, you are directed to their online site for additional information. Kind of irritating, but I suppose that if you are reading this, getting online isn’t that difficult for you. I was able to initially use the FT7 without going online though.

    • Can you explain to me how you got it working. I lost the original transmitter of my ft7 and now bought the h7 as a replacement part. But can’t get the two connected. Cheers, Onno

      • Onno,

        The FT7 and H7 are not compatible. You will need to buy a replacement FT7 strap.


        • Sorry but that is not true. I happen to find your blog, and noticed you said that the Polar FT7 is not compatible with the Polar H7 Bluetooth sensor, and that is wrong. It IS compatible. I am wearing the FT7 watch AND the H7 strap as we speak. My only problem, is after using both the FT7 and the H7 for the past 6 months, the sensor decided it will not pair with anything anymore. Neither with my watch or my iPhone 5. I can’t find any solution to fix it, and I have tried everything on the web suggested.

          Do you have any thoughts?

  9. Hi,

    I purchased the H7 heart monitor and tried to use it with a Droid Razr Maxx. It did not work. In fact, the H7 did not work with any application I tried. I visited Polar’s web site and ultimately found that the Polar H7 is only compatible with the Iphone 4S. Please see the following link for more information: http://www.polar.fi/en/support/FAQs/H7_heart_rate_sensor_compatibility

    I will try the Wearlink + as that is compatible with my device according to Endomondo.

    Safe travels,


    • Sam,

      You are right. Originally, Polar claimed that it would work with the Droid Razr Maxx. They have removed this text, and now specify that it will only work with the iPhone 4s. Here is what is on their website:

      The Polar H7 heart rate sensor provides live heart rate on your mobile training application, so you can make the most of every session. In addition to low energy Bluetooth smart technology, the H7 heart rate sensor uses coded 5 kHz transmission to connect with the majority of Polar training computers on the market and with compatible gym equipment. The soft fabric chest strap seamlessly adapts to your body shape, bringing full freedom of movement to your training.

      * Uses Bluetooth smart technology and coded 5 kHz transmission, providing ECG-accurate heart rate to any Bluetooth smart ready device and compatible Polar training computers
      * Makes it quick and easy to add heart rate to your smartphone
      * Long transmission range (~10m)
      * User replaceable battery
      * Includes a soft and comfortable hand washable fabric chest strap
      *Compatible with iPhone 4S

      We will be clean this up in our update for the H7 next week.



      • I bought a H7 for my new Lg P880 phone. They connected to each other but finally Endomondo said there was no hrm device connected to the btooth 4.0 powered smart phone. How is this possible?
        Based on my tech.knowledge this simply needs some “fine tuning”. I really hope that Polar and the sporttracker companies will find a solution.

  10. […] The only other heart rate monitor strap that works with the iPhone 4s and later is the Polar H7. If you want to learn more about the Polar H7, check out or review at “Polar H7 Low Power Heart Rate In Depth Review” […]

  11. Really like the H7. Since 2006 I’m running with Nike+ and sadly Nike doesn’t support the H7 (yet).
    Here’s the support incident I logged with them:

    “Currently the only option for logging your Heart Rate in Nike+ with this H7 belt on an iPhone 4S is via the iSmoothRun app: just run with this third party iOS app and share/ upload the complete run including track and HR profile to your Nike+ online logbook.
    FYI I run with both RunKeeper and Nike+ Running apps active at the same time! This works well as a backup solution in case one of the two apps would crash mid- or post-run. In practise this happened to me on a few occasions mostly after new major version releases (e.g. 1st run with Nike+ Running v4.0.2).
    Now I can run with 3 apps active simultaniously: RK, Nike+ and iSR. If one of the first two crashes, I can upload the run again to the online logbooks of both via iSR!
    Nike+ please make the lives of 4S+H7 owners easier by implementing the required changes.”

    Reply Nike support:
    “Sorry to disappoint you that this H7 HR monitor will NOT be made made compatible with Nike+ on 4S. At least we currently don’t have plans to do so. I will forward your feedback to the proper department. At present only the Polar wearlink can be used with the following Nike+ devices: SportWatch GPS, SportBand en de iPod nano.”

  12. Additionally: besides logging HR data via iSmoothRun to both my logbooks with Nike+ and Runkeeper, this this new H7 also works perfectly with my ancient Polar XTRAINER Plus coded watch from 1995! Really great since checking HR while running from your wrist is so much easier than from a locked 4S sitting snugly in a (upper) armband with a hard to access a terribly readable screen…

  13. […] Polar H7 Bluetooth Smart Heart Rate Monitor In Depth Review […]

  14. Has anyone tried the H7/iPhone combination with Strava?

  15. I’m using The Strava app in combinatoir with aan iPhone 4S. Now I’ve plannen to Buyten The Polar H7 LP. Looking into the Strave compatible sensors I found ou that ” various sensors including heart rate monitors are supported”. Therefore my conclusion is that the H7 should work perfectly.

    Looking at your overview and tested apps Strava is not mentioned. Is this because you just did not test is, or does the H7 not work?

    Hope to hear from you


    • Tiemo,

      We do use Strava, and like the app, and are in the process of reviewing it. We have been testing it with a Garmin 210 and 610, and H7. The H7 is compatible with Strava:

      Strava for iPhone is currently compatible with Wahoo bluetooth sensors (for iPhone 4S, 5) and the ANT+ Key for connecting to any ANT+ accessory (for iPhone 4, 4S). We are also compatible with the Polar H7 Bluetooth HRM.

      -Elle, Strava Support

      I hope this helps.


  16. FYI,

    Received confrimation by Strava as well. They confirmed the proper functioning in combination with the iPhone 4S & 5 and the mentioned Polar. Will order it based on their confirmation.

    Keep you posted

  17. This is the transaltion of the message I posted on my Facebook page (need I say more):

    This is what they call plug & play. Bought a Polar H7 heartrate monitor for my iPhone4s.The only thing I had to do is Launch Strava app. enable the bluetooth sensor and it works!

  18. I know the H7 works with many apps, but can anyone confirm if it will work with several apps running at the same time. Sometimes I like to compare different apps because they seem to give different results. I heard BLE syncs with the app, not necessarily the phone so this may not allow it to sync with multiple concurrent apps. Has anyone with the H7 tried this?

  19. Hi

    I want to use this but run nike+ for logging miles, cacn the polar beat app be run in the back ground so I can get the best of both worlds. Any solutions you have to use both would be great! Thanks

  20. Does the polar H7 can be used with the nike+ application on the iPod nano 7th?

  21. […] Polar H7 Bluetooth Low Energy Heart Rate Monitor Polar H7 Bluetooth Low Energy Heart Rate Monitor In Depth Review In-depth review. Read our review of the Polar H7 Bluetooth heart rate monitor strap. It uses the newest Bluetooth Low Energy protocol, with a battery life of up to 350 hours. This heart rate monitor is made to work with the iPhone 4S and newer. Price is $79.95. […]

  22. Amazing post. happy to read it.

  23. I have a Nike watch with GPS an 5 KHz transmission. How can I syncronize the H7? I test H7 with Polar application on the phone and works but the watch still find the H7

    Thank you

  24. I just bought an H7 Polar Heart Monitor and I downloaded Polar Beat Apps on my Iphone5. It worked well until recently it is not sync!!!

    I checked the battery in the transmitter and get it changed I also cleaned the strap still it s not working.

    Is polar beat not compatible with IOS 7.0.2?

    Shall I get a new app?

    Look forward to receive your suggestions.


  25. Hi,

    I bought the sensor. It works well with Endomondo and Runkeeper on iPhone 5. The frustrating thing is that though Polar says it is compatible with Polar RS400, I cannot get my RS400 to get the reading from H7. Anyone can help? The message is Check the WerLink. It works well with the old sensor:(.

  26. Bought the H7 to use with my iphone 5. Using Runtastic as my app. However runtastic let me down badly this weekend running a half marathon. Runtastic had me running an extra 2kms and threw everything out of whack.
    My wife has suggested I purchase a GPS watch.
    I want to keep using my H7. Are there any GPS watches out there that will pair with the H7? If so, which ones?

  27. Question…..I have a polar HR watch and strap. I can view my calories burned and heart rate at the end of my workout and then manually record into myfitness pal. Not all my workouts are runs,….most are weightlifting at gym. Can you tell me then is there any advantage to purchasing the polar h7

  28. I have an iPhone 4S and the Polar H7. Which app would you suggest is best for spinning?

  29. Does The H7 work with Strava iphone app?

  30. I’m developing my OWN receiving device for the H7, where can I get the comm protocols and data related to what I need the do for the receiving device to accesss the H7 bluetooth data please. Thanks for your time and help in advanced. Have a good day.

  31. I’m curious if I get the h7 or h6 and my Bluetooth becomes disconnected (out of range, phone dies, etc) is the work out data lost or will the polar hold it until connection is re-established?

  32. I currently use Sony Xperia Z1 compact and sports-tracker apps for running and Cycling. Does the H7 compatible withe the apps? I’m not keen on using Polar Beat to pair with H7 since been reading bad reviews about the apps.

  33. I am using the h7 HRM with Polar Watch (ft1 which runs onf the 5khz) and another bluetooth reciever (not a phone). Its an actigraph body monitoring device- that collects hr data by bluetooth.

    Does anyone have the experience of the H7 working fine for about 1 month, and then going wonky and giving crazy HR signals from 00-200? clearly not dead here….I know that since the H7 is doing 2 functions 5khz and bluetooth, it might run out of battery sooner- but that doesn’t make sense that it would run out SO fast like 3 weeks!



  34. Does anyone know if the H7 will work with the Keiser M3 cycle?

  35. do you have the coumminication protocol of the H7?

  36. Hi I bought a H7 @ 4mths ago, and love it. It has been connected to my iPhone 4s and running sweet on Strava, Endomondo and other apps. I even use it on my treadmill etc.
    Over the past 3 weeks I have now noticed that the device will not pair with either my iPhone, iPad and or my partners Samsung, which aslo had it paired for testing purposes. I have changed battery on the device with a fresh new one which also has been tested for charge, but still cannot get it to register and or pair with my devices. Has anyone have this problem and or have a work around as I cannot afford to get another, hence why I bought a good one at the start.

    Kinda desperate as I use this for racing and training, Any ideas ??



    • I have the same problem, Tony. I’ve had mine since JAN 2013 and in April of this year, *poof* nothin’. I attributed it to the battery, and forgot about it until this month. Like you, I’ve changed the battery, proceeded thru all the trouble shooting steps without success. I contacted Polar, and their recommendation is to send it in for an eval. The battery has a six month warranty, the whole shebang a 2 year limited warranty. We’ll see.


  37. Hi,

    I have polar heart rate monitor watch F6, can I connect the F6 to H7 ?

    and can I connect the H7 to Sony Xperia Z2 ?


  38. […] Polar H7 Bluetooth Low Power Heart Rate Monitor In Depth … – Added May 14th, 2012. Last week, we reviewed the Polar H7 Bluetooth Low Energy heart rate monitor strap. This is a followup to that review. The review can be found …… […]

  39. […] File Name : Polar h7 bluetooth low power heart rate monitor in depth Source : fitnesselectronicsblog.com Download : Polar h7 bluetooth low power heart rate monitor in depth […]

  40. Does the H7 work with the Garmin Virb Elite and if so, how do you get the ANT+ to work?

    Thank you for any help you can provide

  41. Does this allow you to pair the phone as well as link to a machine and/or watch at the same time? Just curious. I typically do a lot of workouts indoors on treadmills, bikes, and ellipticals.


    • I have linked the Polar H7 to 3 devices and simultaneously all of them received the data. Its so cool.

      While I was on a treadmill recently, I noticed the following:
      HTC phone connected thru bluetooth. Endomondo and Runtastic picked up the HR
      Treadmill also got the same HR data
      My Timex HM Watch also showed the HR. Apparently it picks up Polar signals 🙂

      Btw, at any given instant, the 3 links had more or less the same heart rate +/-1.

  42. Interesting you should ask that, because the answer was yes, but now it seems to be no.
    Previously with the H7, I could cycle and see my progress on my iPhone 6 and on the Keiser bke computer. The same held for the elliptical machine. Now – for some unknown reason, I can still see it on the respective machine computers, but it no longer displays or records on the Polar app on my iPhone 6 – even after changing the H7 battery.
    I don’t know why – and can’t seem to get an explanation anywhere.
    And while we’re at it, I don’t know what the right setting is for the Polar app for elliptical. I don’t see elliptical in the app. Some have said cross-country, others treadmill?

  43. Anyone know how accurate the calorie consumption is with the Bluetooth strap? For example does Runkeeper take your weight data and HR from the strap to work out calorie burn?

  44. I think you all probably have an Apple ios problem with the bluetooth device pairing. This a problem that has been discussed in the aviation world. Ipads that are used in the cockpit suddenly stopped working with devices like Bad Elf gps receivers that worked fine for years. I haven’t heard of any forthcoming solutions. Had to buy another gps to solve that problem caused by Apple.

  45. Hi, this is a random queston. But do all of these apps require data on your phone. I assume yes for the GPS feature, but what about for just traking HR values.


  46. My Bluetooth Smart polar only works sometimes. I am very disappointed with this purchase. I have the polar app on my phone it will not connect. I have done exactly like the recommendations say to make it work, I wish it worked as simply as the directions on the video. I will not ever purchase another polar product again after this experience. I am frustrated and want some help. I moisten the strap like the video says, I put in the correct position and still nothing. I have an iphone 6.
    512-431-7001 Sandy Cooper

  47. I have been told the Polar H7 chest strap will connect to Planet Fitness gym equipment such as treadmill, bikes and elliptical machines. I am looking for confirmation on that and if possible to also find wrist watch models that will do the same thing therefore eliminating the need for a chest strap.

  48. I want to see a line graph of the HR, how many Hr readings are taken each minute, no one says.

  49. Could you checkout the mofit app.
    I have been using this but want to make sure the calculations are correct.
    Thank you,


  50. any idea what type of heart rate monitor can be used with Planet Fitness equipment?
    would rather wear something that will communicate with the machines instead of holding on to the heart rate monitor grips

  51. Have you perhaps in the past tested the runtime on the iPhone 4S battery life while using Polar Beat or Strava.?

  52. Does the H7 have any storage capacity, ie if you start an app, then go for a run, leaving your phone, will the data transfer upon return?

  53. Regards,can you finally tell me is H7 smart compatible with Sport Tracker app? On Iphone?
    thank you

  54. Does the strap have to be replaced periodically?

    I use my H7 strap 3 – 4 times a week, and have had it for about a year and a half. I love it, have changed the battery a couple of times. Lately, I noticed that my heart readings were all over the place .. sometimes below 80 and then spike to 220 in a given session (3 – 5 mile run). Should I change the strap or visit a cardiologist?

    • Marcia – Most likely the strap itself has reached out it’s end of life. I’ve experienced the same a while back. You can get a replacement strap for $20 and should be good to go.

  55. Hi there. Thanks for the detailed review. I wanted to know whether the H7 is compatible with my Samsung S6 Edge and the S Health App. I also have a Samsung Gear 2 (not to be confused with the Gear S2) and was wondering if there was some way of viewing my heart rate data on the watch. Please let me know if this is possible. I’m stuck between choosing a garmin device or a polar device… and if the H7 can work with my current stuff… that would be amazing.

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