[Outemu Brown Switches]: Uses Cherry MX equivalent Premium Outemu Tactile &Clicky BlueSwitches.The soldering-free design of keyboard brings Extra Fun and Convenience to replace the switches by yourself with just 1 screw driver and 1 puller tool. It comes with 5 PCS of free switches and puller tool. You can try different Brown/Blue/Red/Black Switches on 1 keyboard. [9 Backlit Modes] - Easy to change mode by pressing FN+Ins; 8 modes gaming keys lighting-up patterns. Support selectable keys lights. [Anti-ghosting 87 keys/n-key rollover]- Allows multi-keys to work simultaneously in high speed. Each key is controlled independently, which allows faster response in games.High Responsiveness and Durability - Mechanical keys with medium resistance, nice click sound, and tactile feedback. Tested for over 50 million times keystroke. [Ergonomic Designed]- the stepped keycap makes it sleek and the arc and slope fit your hands easily to prevent fatigue. Convenient Multi-media Keys FN+F1~F1