Languagesenglish capacity mah55 materialsilicone sim card typeno sim card slot connectivitybluetooth40 fitness wellnesssedentary reminder find my device sleep tracker typesmart bracelet featuresinformation sports exercise record distance tracking long standby blood pressure measurement pedometers calories burned heart rate monitor water resistant water proof supported operation systemandroid ios screen typedisplay technologyoled packing listenglish and chinese manual