Sudroid Smart Watch Phone Bluetooth Smartwatch with 16GB TF Card Wrist Watch for Android Samsung S5 S6 Note 4 Note 5 HTC Sony LG and iPhone 5 5S 6 6 Plus Smartphone Please Note:The Smart Watch Only Supports Selected Mobile Devices with Following Condition: IOS Must be ios7.0 or above. Android: Must Be Android 4.3 or Above. All functions Are Compatible with Andriod Phones. Iphone just Supports Partial Functions, EXCEPT FOR 'Messages', 'BT Notice' and 'BT Camera'. Meticulous Design in Details to Fit Users' Requirements.With A1 on the Wrist,Users can Make Calls,Text,and Monitor Sleep Quality Easily. Capacitive Touch Screen TFT LCD, EDR Time / Date / Week / Battery State Display. To use the watch you need to download the App at http://1.waitfall123.sinaapp.com/code/appdownload.html