Features 1、[Intelligent Power Saving] Intelligent automatic sleep, high efficiency and energy saving, the keyboard uses an AAA battery to work in a mode of intelligent sleep according to the pause time. 2、[Multi Device Connection] You can connect multiple devices and switch quickly. You can connect 3 devices at the same time via BT, and quickly switch between the 3 devices. 3、[Wireless connection] BT keyboard with number keys. The number of keyboard keys is 100, without wires and receivers, the desktop is more tidy. The appearance is beautiful and durable. 4、[All in One Card Slot Design] Smart phones and tablet Mini support horizontal use, and the inclined scientific perspective makes typing more efficient and comfortable, with rich multimedia function keys. 5、[Widely Compatible] System shortcut keys are compatible with switching and free matching. You can switch between for Windows, for IOS, and for Android operating system compatibility modes. Specification Item Type: Wireless Keyboard Material: ABS Size: Approx. 376x145x25mm / 14.8 x 5.7 x 1.0in Keyboard Weight: 550g±5g Number of Keyboard Keys: 100 Connection with Computer: BT System Requirements: For Windows (for Windows8.0 or Above), for OS X(for OS X 10.10 or Above), for Android (for Android4.3 or Above) Keyboard Battery: 1 x AAA Battery (Not Included) Package List 1 x Wireless Keyboard 1 x User Manual