Description: 87 Keys Mechanical Gaming Keyboard with Custom Switches (Blue/Red/Black options) for longevity with greater durability and responsiveness offering click medium resistance audible loud click sound crisp precise tactile feedback for typing and gaming Rainbow LED RGB backlit mechanical USB gaming keyboard, 9 different lighting effects, Precision engineered keycaps offering crystal clear uniform backlighting Anti-Ghosting, ALL 87 keys are conflict free n-Key Rollover for ultimate Gaming performance. Efficient USB interface, With anti-jamming magnetic Ergonomic designed, perfect curve,the palm is more fit and comfortable, not easy to feel tired. Specification: Product Name: Mechanical Gaming Keyboard Brand: ZUOYA Model: X51 Color: Black Wired/Wireless: wired Interface: USB Number of keys: 87 keys Language: English/English+Russian Backlight: RGB light Switch: Blue/Black/Red Switch Cable length: 1.5m Size: 35*12.3*3.5cm Weight: 0.84kg Package Includes: 1 * ZUOYA Wired Mechanical Gaming Keyboard Note: Blue switch has paragraph sense , when you press it ,it have a "kacakaca" sound Black switch no paragraph sense, but the resilience is good, straight up straight down Red switch = light version of the black switch (its press force is less than the black switch)