Band length[mm] : 260 Band width[mm] : 22 Weight[g] : 62 SIM Card Slot : no Voice assistant built-in : no Bluetooth-compatible Version : 5.0 Wi-fi : no Metrics measured : Heart Rate Monitor,Other,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure Monitor,Blood Sugar Monitor Activity Tracked : Other,Steps Tracker,Distance Tracker,Calorie Tracker,Activity Tracker Touch Screen : YES Category : Smart Watches Screen Material : TFT CPU Model : 7013A Band Detachable : Yes APP Download Available : Yes Battery Detachable : Yes CPU Manufacturer : Mediatek Resolution : 360*360 Display Size : 1.39 Movement Type : Electronic Style : SPORT Application Age Group : Adult Screen Shape : Round Case Material : Alloy Band Material : Silica gel Waterproof Grade : Life Waterproof SIM Card Available : No Mechanism : No Multiple Dials : No GPS : Yes Network Mode : None Battery Capacity : 220-300mah Rear Camera : None RAM : lt;128MB ROM : lt;128MB System : Android Wear,IOS Type : On Wrist Compatibility : All Compatible Language : English,Spanish,Portuguese,ITALIAN,French,German,Korean,Japanese Function : Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Push Message,Big Three Needles,24 hour instruction,Chronograph,Alarm Clock,Small Second,World Time,Permanent Calendar,week,Phase of the Moon,Month,Heart Rate Tracker,Interactive Music,Noctilucent,Calendar Brand Name : GEJIAN Origin : Mainland China Certification : CE Product number:ET440 Function points ECG electrocardiogram function, Bluetooth communication, non-invasive blood glucose measurement, HRV function, AI medical diagnosis,Mett function, temperature mon