Dual Mode Keyboard: Has Bluetooth 4.2 and 2.4G wireless connection technology. Can connect up to 3 devices at same time:: two through Bluetooth and one through the USB receiver. Ultra Slim and Light: Thin light portable ergonomic keyboard with 12 multimedia function keys and with convenient keys. Power Saving & Rechargeable: Has Auto-power management and handy on/off switch lengthen battery life up to 1.5 years Widely Compatible: Universally compatible with Tablet, Mac, iPad, iPhone, phone, laptop, PC, Windows, IOS, Mac OS, and Android. 3 Year Mfg Warranty: Has a 3 year manufacture warranty. Package includes the keyboard, USB-A receiver, 2 AAA batteries, quick instruction guide.