Languagesenglish capacity mah100mah materialstainless steel sim card typeno sim card slot connectivitybluetooth40 fitness wellnesssedentary reminder alarm clock cpunrf51822 ramother charging timeh2 typesmart bracelet featurestouch screen long standby blood pressure measurement pedometers heart rate monitor water resistant water proof models15 sensorgravity sensor heart rate sensor supported operation systemandroid ios screen typedisplay technologyoled stan