Please Note:The backlight function is not compatible with IOS and Chrome OS system,so the IOS and Chrome OS device(for iPadfor MacBookfor iMACfor Chromebook) could not open the backlit,If you mind please do not place an order !!! Characters are clear without turning on the light Comes with backlight, more cool Relative to the luminous pattern of the button gap We adopt a new mixed color rainbow glow Pure white light mode Natural transition of light Create a colorful backlight effect Rich multimedia buttons Pre Fn key + corresponding function key F1-F12 to trigger Browser:FN+F1 My email:FN+F2 search:FN+F3 player:FN+F4 play / Pause:FN+F5 previous piece:FN+ F6 next track:FN+F7 Volume down:FN+F8 Volume increase:FN+F9 Mute:FN+F10 my computer:FN+F11 Calculator:FN +F12 Product parameter specifications Product Positioning: Gaming Competitive Keyboard Link method: Wired Backlight effect: mixed color/white backlight Wire material: tensile plastic wire Number of keys: 104 Weight: 452g 10g Wire length: 1. 40m soil 0.3 Foot stickers: Yes Floor: Reinforced floor Multimedia: FN+F1-F12 multimedia buttons Interface type: USB Size: 435* 130*25mm