Languagessimplified chinese english romother capacity mah60 materialmetal tpu sim card typeno sim card slot connectivitybluetooth40 fitness wellnesssleep tracker cpunrf51822 ramother charging timeh1 typesmart bracelet featuresmessage control information sports distance tracking pedometers calories burned heart rate monitor modelm3s sensorheart rate sensor supported operation systemios android screen typedisplay technologyoled stand by timeh150 200 pack