Features: Experience fast response and smooth typing with the 21 key mechanical numeric keyboard With independent key and impact resistance technology, this keyboard ensures accurate and reliable keystrokes, perfect for gamers and office workers alike. Suitable for frequent users of numeric key, such as gamers, programmers, and office professionals, who demand precisions and efficiency in their work. Enhancer your gaming experience, programming development, and office tasks with portable keyboard. Take it anywhere and enjoy improved input efficiency operation. Plug and play not require a driver Specifications: Component:ABS Type:Green Shaft/Redness Shaft Color:Yellow/Green Connection Modes:Corded/Bluetooth-compatible/2.4G Wireless Size:Approx.82.9x121x36.4mm/3.26x4.76x1.43inch Package Includes: 1Pc Mechanical Keyboard note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.