Languagesenglish capacity mah100 materialabs sim card typeno sim card slot connectivitybluetooth20 bluetooth40 bluetooth30 fitness wellnesspulsometer alarm clock find my device sleep tracker activity tracker ram64mb charging timeh2 typesmart bracelet featuressports distance tracking blood pressure measurement pedometers heart rate monitor sensorfinger sensor heart rate sensor supported operation systemandroid ios screen typedisplay technologyoled stand by time