Multimedia Knob Rotate to adjust volume, click to play/pause music. Hot-swappable shaft sockets are compatible with 90% of the shafts on the market, and are compatible with all three and five pins. Support three-mode wired + Bluetooth + 2.4G connection. Support RGB backlight mode adjustment. This keyboard features an ergonomic sloped design and stepped keycaps to minimize fatigue. Type: gaming keyboard Number of keys: 67 keys Connection : 2.4G wireless Bluetooth wired Key Technology: X Architecture Material: ABS Color: Black Package Contents: 1 x Mechanical Keyboard 1 x Cable 1 x Shaft Puller 72 x Red Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.