Vktech&reg; Bluetooth Smart Wrist Watch Phone Mate for IOS Android iPhone Samsung (Black) This is a new Bluetooth Smart U Watch, which is compatible with all Bluetooth V2.0 or above enabled smart phones, tablets and PCs (support Android 2.3 or above, IOS 5 or above), such as iPhone 4, 4S, 5, 5S, Samsung S3, S4, Note 2, Note 3, Note 4. Work with IOS 5.0 above and Android 2.3 smartphone and tablets and PCs (Bluetooth V2.0 Or Above) Ring reminder when receive a message (including Wechat, Facebook, Twitter, WhatsApp, Skype, and so on) Smartphone camera control (only for android phone),Smartphone music control Power Supply: Built-in 200mAh rechargeable battery