1. Professional Mechanical feeling backlit gaming keyboard for gaming and office not the real mechanical keyboardbut it worth more. 2. Standard 104 Keys with 11 special designed multi media keys combinations.and the keyboard.Size:17.1 x 5.3 x 0.9 in. 3. 3-LED backlit with breathing light by pressing FN+Light(right of FN) to enter into breathing light model.Press Light button to change the three colors red-blue-purple. 4. Support Requirements:Windows 8 Windows 7 Windows Vista Windows XP.PC Laptop with USB portRaspberry PiMac OSLinux. 5. Automatically enter sleeping mode 10 minutes without operation and backlights offany key pressed will awaken and backlights on.