[Easy Installation]: Getting started is simple; just plug the receiver into a USB port and start typing numbers immediately. No drivers are required. The keys are light and quiet to press, significantly speeding up your productivity. [Quiet Soft Touch]: Integrated ergonomic tilt provides extra compatibility, helping to reduce strain. Highly compatible for those working with spreadsheets, accounting files, or financial applications. [ADVANCED 2.4 GHz WIRELESS]: Enjoy the reliability of a cord plus wireless convenience and freedom with fast data transmission, virtually no delays or dropouts. Allows the keypad to operate up to 33' from the receiver, creating a wireless workspace with a standard USB interface. [USER-FRIENDLY]: The battery indicator light lets you know when the keypad's AAA battery is running low. Conveniently placed directional keys can be used as joystick control, allowing you to feel the thrill of playing games with a wireless device. [COMPATIBILITY]: Works with PCs and desktops that have Windows 2000/XP/Vista/7/8/10 operating systems. The numeric keypad is not fully compatible with Mac systems. (Function keys do not work, while the number keys part works well, as Apple does not support external keyboards with function keys). Color: Black Material: Plastic Size: 14x8.6x2cm Package Contents: 1 x Wireless Keyboard 1 x Receiver Only the above package content is included; other products are not. Note: Light photography and different screens may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.