Featuresr silicone strap sturdy aluminum caser cpu mtk6580 quad core 13ghz quicker data processingr rom 8gb ram 512mb larger than normal watchr 13 amoled touch screen resolution 400400 pixelr nano sim card slot support 2g gsm 3g wcdmar android 51 os with bt40 r 350mah battery 2 days standby timer daily water proof for hand washing water splashingr compatible with ios 90 android 50 devicesr other function gps navigation voice assistant wifi heart rate pedome