Description: 21 Keys Numpad: The 21-key mini customized mechanical keyboard adopts professional gaming chips to get a perfect gaming experience. Compact Size: USB cable power supply, plug and play. RGB colorful background lighting effects, cool and fashion, small but not simple. Easy to Use: Comfortable design, suitable for gamers, PS designers, cashier desk, bank, stock exchange, office, etc. Long Lifespan: The key life is up to 50 million times, and it can be used for a long time whether it is for games or work. Blue Switch: Blue switches designed, suitable for intense gaming. Specification: Material: ABS Plastic Model Number: K21 Type: Mini Mechanical Keypad Keys: 21 Key Switch: Blue Switches Size Chart: 13.5x8.7x3.5cm/5.31x3.43x1.38inch Package Includes: 1 Piece K21 Keyboard Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thanks!