Languagesenglish capacity mah90 materialabs sim card typeno sim card slot connectivitybluetooth40 bluetooth30 bluetooth20 fitness wellnesssleep tracker activity tracker exercise reminder find my device ram64mb charging timeh2 typesmart bracelet featurescamera control sports distance tracking long standby calories burned sensorfinger sensor proximity sensor gravity sensor supported operation systemandroid ios screen typedisplay technologyoled stand by timeh1