Languagesenglish capacity mah85 materialsilicone connectivitybluetooth40 fitness wellnessexercise reminder sedentary reminder find my device sleep tracker activity tracker cpunrf51822 charging timeh18 typesmart bracelet featuresheart rate monitor anti lost camera control message control touch screen sports distance tracking long standby pedometers calories burned modelyyi6hr sensorgravity sensor finger sensor heart rate sensor gyro sensor proximity sensor supported o