This Nixon Mission Smartwatch is powered by Android Wear with Google Fit activity tracking, voice search, gesture/music control and more. Featuring the newly launched Qualcomm Snapdragon 2100 system-on-chip (SoC), built specifically for wearable. Case Diameter is 48mm also has captive touch screen with Multi-Touch & wet finger technology. This smart watch is compatible with iPhone and Android phones. Android Wear requires a phone running Android 4.3+ or iOS 8.2+. Supported features may vary between platforms.