Ltpgt this smart bracelet can display the time steps distance and calorie clearly let you know your sports data right now when bluetooth paired you can sync your data to andriod phone os must be 43 or above and bluetooth must be v40 and ios phone ios must be 70 or above and bluetooth must be v40 it gives you real time assessment of your exercise throughout the day ltpgt ltpgt the wristband is adjustable you can adjust it to fit your wrist it is just 46g so when you