Features: 100% brand new and high quality Built-in lithium battery supports wireless charging of mobile phones.(Instructions for wireless charging: pull out the charging plate in the middle of the bottom of the keyboard, the indicator light flashes red and blue alternately and then the red light is always on; put the wireless charging device on the coil of the charging plate; the indicator light for the normal working of the wireless charging is displayed in blue . When not in use, push the bottom charging baffle back to its original position and the red light will go out.) The professional green switch is used to provide faster and more flexible response. Clear clicking sound, full sense of rhythm, precise tactile feedback, let you enjoy the fun of typing. The 104 keys have no conflicts, ensuring a smooth gaming experience. Stepped keycap layout, ergonomic design, very comfortable, not easy to fatigue, very suitable for games and work. Multiple backlight modes can create a great gaming atmosphere. The dreamy backlight can help you better enter the game scene, and you can also adjust the brightness and speed. Support computer systems, including Windows 10, Windows 8, Windows 7, Windows XP, Windows VISTA, etc.Support applicable to all major computer brands and game consoles. Package Includes: 1PC x Gaming Keyboard Specifications: Interface Type: USB Wired Key Number: 104 keys Shaft body: green shaft Color: black,white Battery capacity: 4000mAh Wireless charging output : 5W Keyboard size: approx. 45x14x4cm/17.71x5.51x1.57in note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you