Languagesenglish capacity mah80 materialsilicone sim card typeno sim card slot connectivitybluetooth40 fitness wellnessfind my device stopwatch sleep tracker activity tracker pulsometer exercise reminder sedentary reminder pedometer pulse tracker community share alarm clock cpunrf51822 charging timeh1 water resistance depth3m waterproof levelipx 8 typesmart bracelet featuressports multifunction exercise record distance tracking long standby blood pressure measurement