Guarantee: 30-Day Money-Back guarantee,12-Month Warranty and free user support.Please feel free to contact us with any questions you may have. Compatible with Windows XP/Vista/7/8/10,not fully compatible with Mac OS and Microsoft Surface. Easy to operate:just plug the USB cable into your computer.No battery and drive required!. Waterproof and Splashproof: the drain holes at the bottom can remove water from the keyboard quickly,effectively improve the life of the keyboard. 3 colors LED Backlit: Red, purple and blue LED backlight modes can be adjusted.It's very cool, under the night, adding a sense of mystery.Also it's convenient for you to use in low light environment.