1 year battery life no recharging needed. Physical dimensions circumference 5.4 inch. Display size( WxH) 0.39 x 0.39 inches 24/7 wearability swim friendly with 5 ATM water resistance. Case material:...

HD 0.96 color screen, dynamic display UI interface, intelligent family interaction. Global font library contents Push. Multi mode (swimming, skip, table tennis, tennis, etc.) Heart rate monitoring, blood pressure monitoring,...