? A Fusion of Retro Style and Modern Design a retro mechanical keyboard combining retro aesthetics with contemporary state-of-the-art functionalities ?RGB LED Backlit Chroma Dimmable FN+INS: 13 blacklight mode make a beautiful sight on your desk. Press FN+1-5 to the fixed game mode then press FN+HOME to set color of each key with no driver needed? N-key Rollover Anti-ghosting 104 keys. Each key is controlled by an independent switch giving you very accurate response even when hitting multiple keys at the same time. Ideal for gamers typist... ? Blue Switches With DIY blue switches it delivers a clicky and tactile feedback sensitive and responsive. All keys support switch DIY replacement.? Full key design With numeric keys it is convenient for you to work for office. ? Function Shortcuts Key It is accessible to calculator email web browser volume media etc by pressing FN+F1-F12. ? Wide Compatibility It is compatible with Windows 10 Windows 8 Windows 7 Mac OS X Windows XP Windows VISTA etc. ? Feature: Metal base high quality ABS material non slip design splash proof and durable. Keycap: Double shot injection mold for durable keycaps Key durability: Up to 50 million clicks Key profile:4.0+/-0.2MM Key strength:60+/-15g Key Switch Type: Blue Mechanical Switches 1.8m bold USB cable is detachable and replaceable and has a nice three way channel to route the cable left up or right ? Package content 1x mechanical keyboard1x user manual1x keycap puller 5x switches (under the front part of the box with the cable) 1x switch pullerTo reset keyboard to original settings press FN+ ESC for 3 seconds Question: Lights broken after light usage some lights work and some dont? Answer: It is just one of the game light modes when you press FN+1/2/3/4/5 by accident. Press FN+Ins to restore normal light modes.