Fitbit Flex 2 fitness tracker is an ultra-thin waterproof activity tracker that is auto-tuned to continuously track your every step, calories burned, and the distance walked. It comes with an OLED LCD display that offers quality streaming. It syncs smoothly with iOS, and Android and is compatible with smartphones.
Pros
Sleek design and comfortable to wear
Device is waterproof
Long battery life
Cons
Limited to basic fitness tracking
No altimeter, so can’t measure the height
Basic notifications may be a cause for concern
