ZGPAX S99 Hear Rate Sport Smart Watch MTK6580M 3G WCDMA 2G GSM 1.33" 360*360px Capacitive Touch Round Screen Android 5.1 OS 512MB RAM+ 8GB ROM 2MP Camera MP3 MP4 WiFi GPS BT 4.0 for iPhone 6 Plus 6S Plus Samsung S7 edge HTC Smartphone Stylish Design Simpl