1[BT3.0] BT3.0 high speed transmission technology can provide a reliable connection within a range of 360 and 10 meters without any interference. 2[2 Channel Type] 2 Channel BT keyboard, when linking 2 devices, you only need to switch the position of the switch to switch the device link. 3[Multi System Compatibility] Supports for IOS, for Android, for Microsoft operating systems, and is equipped with hot keys and shortcut keys, which can be switched with a simple touch. 4[Fast Reactivity] Scissor foot structure, light weight, fast reactivity, comfortable hand feel, and a light touch can bring you a comfortable experience. The unique design of the lying trough can play a role in supporting the tablet and mobile phone. 5[Ergonomic Design] Small and convenient, allowing you to enjoy a quiet input experience anytime, anywhere, ergonomic design, feel more comfortable and accurate. Item Type: WirelessKeyboard Material: ABS BT Version: V3.0 Transmission Distance: 10m / 10.9yd Number of Keys: 78 Keys Battery: Lithium Battery Battery Capacity: 300mAh ( with Inbuilt Battery) Color: Silver System Support: For Android 3.0 or Later, for IOS 4.0 or Later, for Windows XP, for Windows 7, for Windows 8 or Newer 1 xWirelessKeyboard( with Inbuilt Battery) 1 x Data Cable with Inbuilt Battery