Weight[g] : 45 SIM Card Slot : Nano sim card slot Voice assistant built-in : no Bluetooth-compatible Version : 4.0 Wi-fi : YES Metrics measured : Heart Rate Monitor,Blood Oxygen Monitor,Blood Pressure Monitor,Body Temperature Monitor Activity Tracked : Steps Tracker,Distance Tracker Touch Screen : YES Category : Smart Watches App name : ME.watch Screen Material : IPS Band Detachable : Yes APP Download Available : Yes Battery Detachable : No Resolution : 240*284pixel Display Size : 1.83' Screen Movement Type : Electronic Style : Healthy Screen Shape : Square Case Material : Forged Carbon Band Material : Silica gel Waterproof Grade : Life Waterproof SIM Card Available : Yes Mechanism : Yes Multiple Dials : Yes GPS : Yes Network Mode : 4G Battery Capacity : >450mAh Rear Camera : 1.3MP RAM : 1GB ROM : 8GB System : Android Wear Type : On Wrist Compatibility : All Compatible Language : English,Russian,Spanish,Polish,Portuguese,Turkish,ITALIAN,French,German,Korean,Japanese,Ukrainian,Hebrew,Dutch,Arabic,Indonesian Function : Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Remote Control,Push Message,Big Three Needles,24 hour instruction,Alarm Clock,Small Second,World Time,Permanent Calendar,Power Reserve,week,Month,Heart Rate Tracker,Noctilucent,Thermometer,Lighting,Countdown,Calculators,blood pressure monitoring Certification : CE,FCC,RoHS,KC,WEEE Battery : 750mAh Lithium-ion polymer battery 3.7V GPS : L1,1575.42MHz C/A Waterproof : IP67 Waterproof Bluetooth : Support WIFI : Support Sos call : Support Recorder : Support Music : Support Google play store : Support Facebook/Whatsapp : Support