Size Name:US Layout .Friendly Tips 1. There is no single Backlight control button for the RGB mouse, that means if you connects the mouse with your PC,it will keep light. If you mind this, pls consider it before order . 2. The keyboard switchs areNot Real mechanical . 3. The keyboard backlight has 3 colors:Red ,Green,Blue. 4. If you have any problem during the use ,hope you could send message to Ruige service team firstly and we will try to help you in time 5. Warranty :12 months How to control the Backlit 1.FN+Backlight key Turn on/off the backlight of the keyboard 2.FN+ Pageup/Pagedown key Increase/decrease LED lighting brightness 3.FN+ F1-F12 To unlock different functions for each buttons 4.FN+ Down key Turn off the backlit/you could also press backlight button three times Specification *Keys: 104 keys *Backlit: 3 Colors Red,Green, Blue *Weight: 450g *Size:43*13.6*2.6cm *Compatibility: Win 10/ 8/7/Mac/Raspberry Pi/PC *19 Keys Anti-ghosting What's in the box? 1 x Mechanical feeling Gaming Keyboard 1 x Gaming mouse 1 x User manual