Specification: Item Type: 22 Keys Numeric Keypad Material: ABS Optional Color: Silver Black / Iron Grey / Rose Gold Support System: for ANDROID, for WIN, for Mac OS Number Of Keys: 22 Keys Support Wireless: 2.4G Wireless Keyboard Life (Keystrokes): 3 Million Times Response Speed: 5 Milliseconds Compatible with Bluetooth 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

?Wide Compatibility?:Our Wireless Numeric Keypad Works with PC and desktop computers ,Support for Android, for Windows, for Mac OS systems. ? Advanced 2. 4 GHz Wireless?: You can enjoy the reliability of a cord plus cordless convenience fast data transmission, virtually no delays or dropouts. Scissor foot key cap structure design, fast rebound speed, low delay. ?Humanized Design ?: Our Mini Numeric Keypad with Integrated ergonomic tilt provides added comfort which helps reduce strain,ergonomic design, more comfortable handfeel. ?Excellent Quality and Durability?: Use time up to 80 hours , keystrokes up to 3 million times.You can use it for a long time. ?Easy to Use?: Our Wireless Numeric Keypad is easy to get started, just plug the receiver into a USB port and start crunching numbers right away. 22-key wireless numeric keypad, USB plug and play.