?PROFESSIONAL AFTER-SALES SERVICE?We provide every Redragon customer with 24-Month Warranty , Please feel free to contact us when you meet any problem. We will spare no effort to provide the best service to every customer within 24 hours to help you. ?WIDE COMPATIBILITY?Plug and play, with dual-head detachable type-c cable, work perfectly for Windows 7, 8, 10, 11,Vista, XP, Chrome, Linux, MacOS, ios systems. It's a good choice for your PC, Laptop, Tablet. ?8 PROFESSIONAL GAMING MODES?The keyboard has 8 preset backlits for popular gaming modes(LOL, FPS, CF, COD, QQ RACE), it is good for you to find the essential keys quickly. ?RESPONSIVE RED SWITCHES? K636 mechanical gaming keyboard features with red switch which offers you satisfying clicky sound and linear feedback, require less force to press down and the keys feel smoother and easier to use. It's best for rpgs and mmos, imo games. ?FULLY PROGRAMMABLE & HIGHLY CONFIGURABLE?Expand your options to design your own keys, light effects and macro, the macros with different keybindings or shortcuts combine multiple keys function in one key for more efficient work and gaming. ?INNOVATIVE 90% COMPACT LAYOUT?Adopts 94-key layout, this mechanical keyboard keeps essential numeric pad, arrow keys, del/+/-..., compact and save more space compared to standard size 87,104 keyboard. Dedicate for games and efficient working.