Posted by a reviewer on Amazon

For the watch to be accurate it has to get accustomed to your use

Posted by a reviewer on Amazon

Wear the watch consistently for a couple of weeks and the accuracy will adjust

Posted by a reviewer on Amazon

Excellent issues with hr at super high hr tho

Posted by a reviewer on Amazon

Wife has has some problems operating must install app to get instructions

Posted by a reviewer on Amazon

Instruction booklet should be included with product

Posted by a reviewer on Amazon

I tried it on my other hand and the same thing happened

Posted by a reviewer on Amazon

Since then i did some reading within the online fitbit community forum and discovered this this is a common problem and has led to health problems including one known hospitalization

Posted by a reviewer on Amazon

The concern is the emf electromagnetic frequency that is constantly emitted through the green led’s on the rear of the device