FitbitAltaHR smart fashion heart rate bracelet screen display: black and white screen, compact, average texture and workmanship, not cheap but acceptable, easy to leave fingerprints on the screen, advertised that it can be used for 7 days after charging, better than Apple. Choosing this one also takes a fancy to its endurance. The pairing and updating of the App on the mobile assistant went smoothly, only taking 3 to 5 minutes.
FitbitCharge2 smart fashion heart rate bracelet screen display: black and white screen, professional and accurate, raising your hand to display needs to master the essentials, and keep it at the basic level after raising your hand and turning your wrist. It is a standard watch posture, and you can move slowly. There is no difference in each attempt.