Languagesenglish capacity mah70 materialsilicone connectivitybluetooth40 fitness wellnessexercise reminder sedentary reminder find my device sleep tracker activity tracker cpunrf51822 charging timeh18 typesmart bracelet featurestouch screen sports distance tracking long standby pedometers calories burned heart rate monitor anti lost camera control message control modelyym25 sensorfinger sensor heart rate sensor gyro sensor proximity sensor gravity sensor supported op