Band width : 22mm Weight[g] : 36 Voice assistant built-in : no Bluetooth-compatible Version : 5.1 Wi-fi : no Metrics measured : Heart Rate Monitor,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure Monitor,Blood Sugar Monitor,Body Temperature Monitor Activity Tracked : Steps Tracker,Distance Tracker,Calorie Tracker,Activity Tracker Touch Screen : YES Category : Smart Watches Screen Material : LCD CPU Model : GR5515 Band Detachable : Yes APP Download Available : Yes Battery Detachable : No Resolution : 286*320 Display Size : 1.91inch Movement Type : Electronic Style : SPORT Application Age Group : Adult Screen Shape : Square Case Material : Alloy Band Material : Silica gel Waterproof Grade : Life Waterproof SIM Card Available : No Mechanism : Yes Multiple Dials : Yes GPS : No Network Mode : None Battery Capacity : 220-300mah Rear Camera : None RAM : <128MB ROM : <128MB System : Android Wear Type : On Wrist Compatibility : All Compatible Language : English,Russian,Spanish,Portuguese,ITALIAN,French,German,Korean,Japanese Function : Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Push Message,Alarm Clock,Heart Rate Tracker,Thermometer,Countdown,Calculators