1. Elegant blue LED backlighting with 7 different colors (dark blue, soft blue, bright green, soft green, red, purple, cyan) makes the typing experience more enjoyable and aesthetically pleasing. When the device is not in use, the backlight will automatically turn off to save power when it is most needed. 2. It is fully compatible with the four major mainstream operating systems: iOS / Android / MacOS / Windows, and is equipped with exclusive function keys for each operating system. Any device that supports Bluetooth, such as tablets and smartphones, can be easily paired, and you can quickly access commonly used functions, such as volume, playback control, text copy and paste, etc. 3. The silent and low - profile keys bring a brand - new comfortable experience to your fingertips. In addition, with the Windows - exclusive hotkeys, you can access all the most commonly used functions and media controls more easily than ever before. The keyboard with scissor - shaped springs can be used continuously for more than 3 million times. 4. The elegant ultra - thin design ensures easy portability. This wireless keyboard is extremely portable and is an ideal travel accessory. 5. It has a built - in rechargeable lithium - polymer battery that can be used for more than 48 hours on a single charge. Bluetooth 3.0 enables fast connection - after the first successful connection, it will automatically connect when the device is turned on next time.