1、Easy Switching: Supports connection to all Bluetooth wireless devices via an external keyboard, up to 3 Bluetooth devices, and switch between them by touch, even when using different operating systems. 2、Programmable: Keyboard has programmable multimedia keys that support for Windows, for OS X, for IOS, for Android. 3、Automatic Energy Saving: 78 key keyboard with intelligent automatic energy saving technology and on/off button, durable frame design. 4、Ergonomic Design: The small keyboard allows for a lower arm range and better body posture, ergonomically designed to provide glossy, quiet and familiar writing. 5、Scope of Application: This slim Bluetooth wireless keyboard for PC, laptop, phone or tablet has a lightweight design and small size so you can multitask at home or on the move. Item Type: 78 Key Wireless Keyboard Material: ABS Number of Keys: 78 Keys Bluetooth: 5.0 Multi Device Link: Support Three Bluetooth Devices Keyboard Size: Approx. 287 x 125 x 20mm / 11.3 x 4.9 x 0.8in Battery: AAAx2(Not Included) Suitable For: For Windows, for OS X, for IOS, for Android 1 x Keyboard 1 x User Manual