Languagesenglish romother capacity mah100 materialsilicone sim card typeno sim card slot connectivitybluetooth40 fitness wellnesscall reminder sleep tracker activity tracker dual time zones sedentary reminder cpunrf51822 ramother charging timeh1 waterproof levelipx 4 typesmart bracelet featurestimer message control heart rate monitor information water resistant water proof touch screen sports exercise record distance tracking long standby blood pressure measureme