Fitbit charge HR : - Nice product. It is simple to setup and use and the app provides a lot of options and analysis. But heart beat sensor of inaccurate or basically, as accurate as a wrist based sensor can be. I have perfectly normal blood pressure 120/80. But while sitting or relaxing, it keeps varying from 70-90. Otherwise as an activity tracker, it does a fine job. If you really have to track heart rate, get a pendant type sensor.
However, I did face quite some difficulty some days ago. Just after 10 days of buying, it stopped syncing with phone. I had to try all the permutations of restarting the tracker, phone, different OS, uninstalling and installing the apps again to make it work, basically a good 2-3 hours of effort. It seems like such issues are not infrequent. So one has to have some patience and acumen to go through troubleshooting guides and online forums to get out of such situations.
Pros of the product:
1 - fits nicely on the wrist.
2 - good rubber quality and splash proof. I have used it sometimes under shower but not advisable.
3 - you can set alarms and the vibration is sure to wake up at the set times.
4 - good battery life, you need to charge it once in 3 or 4 days
5 - it works like a watch too all the time and automatically shows the time whenever you turn your wrist.
6 - the steps are almost accurate
7 - the sleep management is extremely correct and very helpful to monitor your sleep
8 - the best part is the app developed by the company - you can have infinite friends and keep challenging them. you can download the app without fitbit too to get the feel and yes the challenges keep motivating you to do your extra bit always.
Cons
1- you should not wear it all the times as sometimes rashes get developed.
2- most of the times I use it as a watch and I miss my wrist watches, but then you have the option of wearing both.
3- one more charger to manage
4- the screen gets scratches easily
Overall I would surely recommend for health conscious people like me who are not much regular in their walks or exercise. Go for it and stay fit