Languagesenglish capacity mah420 materialsilicone connectivitybluetooth40 fitness wellnessexercise reminder sedentary reminder find my device sleep tracker activity tracker cpumtk2503 charging timeh18 typesmartwatch featuresanti lost camera control message control touch screen sports distance tracking long standby pedometers calories burned modelyyy21 sensorfinger sensor gyro sensor proximity sensor gravity sensor supported operation systemandroid ios screen typed