1. Support for Windows XP, for Linux, for Vista, for Windows 7/8/10.
2. 22-key wireless numeric keypad, USB plug and play.
3. Use time up to 80 hours , keystrokes up to 3 million times.
4. Ergonomic design, more comfortable handfeel.
5. Scissor foot key cap structure design, fast rebound speed, low delay.

Spec:
Item Type: 22 Keys Numeric Keypad
Material: ABS
Optional Color: Silver Black / Iron Grey / Rose Gold
Support System: for Windows XP, for Linux, for Vista, for Windows 7/8/10
Number Of Keys: 22 Keys
Support Wireless: 2.4G Wireless
Keyboard Life (Keystrokes): 3 Million Times
Response Speed: 5 Milliseconds
Wireless Transmission Distance: Approx. 10m / 32.8ft
Working Current / Voltage: 0.25MA 3V
Battery Type & Capacity: 2 x AAA (Not Included)
Use Time: 80 Hours

Package List:
1 x Numeric Keypad (Battery Not Included)
1 x User Manual
1 x Receiver