Description Two types of numeric keypads are available for you to choose from, a 2.4G keyboard and a Bluetooth 3.0 keyboard to meet your different needs. With a wireless design, the 22-key multi-function keyboard is more convenient to use. Suitable for most computers and laptops, with a wide range of applications. Small in size and light in weight, this digital keyboard is easy to carry and saves space. Suitable for many places such as homes, offices, shops, etc. You can also give it to your friends or loved ones as a gift. Specification: Color: black. Material: ABS plastic Number of keys: 22 keys Keyboard life (keystrokes): 5 million times Response speed: 5 milliseconds Wireless / Bluetooth transmission distance: 10 meters Working current / voltage: 0.25 mA 3V Built-in battery: No Battery Type Capacity: 2*AAA (not included) Charging time: none Use time: 80 hours Note There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package included: Type 1 1 * 2.4G keypad. 1 * USB receiver. Type 2 1 * Bluetooth keypad.