Languagesenglish capacity mah100 materialsilicone connectivitybluetooth40 fitness wellnessexercise reminder sedentary reminder find my device sleep tracker activity tracker cpunrf51822 charging timeh18 typesmart bracelet featuressports distance tracking long standby pedometers calories burned heart rate monitor gps anti lost camera control message control touch screen modelyyu3 sensorfinger sensor heart rate sensor gyro sensor proximity sensor gravity sensor supporte