Voice assistant built-in : no Bluetooth-compatible Version : NONE Metrics measured : Other Activity Tracked : Steps Tracker Touch Screen : YES Category : Smart Watches CPU Model : MTK MT2503A Band Detachable : Yes APP Download Available : Yes Battery Detachable : No CPU Manufacturer : MediaTek Resolution : 240X240 Display Size : 1.44' Touch Screen Movement Type : Electronic Style : SPORT Application Age Group : Child Screen Shape : Square Case Material : Rubber Band Material : Silica gel Waterproof Grade : Professional Waterproof SIM Card Available : Yes Mechanism : Yes Multiple Dials : Yes GPS : Yes Network Mode : 2G Battery Capacity : >450mAh Rear Camera : 1.3MP RAM : 512mb ROM : 512mb System : Android Wear Type : On Wrist Compatibility : All Compatible Language : English,Russian Function : Passometer,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Remote Control,Push Message,24 hour instruction,Alarm Clock,Small Second,World Time,Permanent Calendar,Power Reserve,week,Month,Noctilucent Certification : CE Frequency : GSM850/900/1800/1900MHz SIM Card Slot : Single SIM(Micro SIM slot) Additional Features : 2G,Alarm,GPS,People,Sound Recorder Battery : 500mAh Bulit-in Battery Camera : Yes GPS location accuracy : 5-20m LBS location accuracy : 100-1000m Size : 46*39.5*15.5mm