Package Dimensions:15 x 10 x 3 cm Series:Health Gearzkhudcpx6g-13 Guaranteed software updates until:unknown Features: 1. Compatibility with Android, Windows and operating systems. 2. 22-key wireless numeric keypad, USB plug and play. 3. Usage time up to 80 hours, keystrokes up to 3 million times. 4. Ergonomic design, handfeel more comfortable. 5. Scissor foot keycap structure design, fast rebound speed, low delay. Specification: Item Type: 22-Key Numeric Keypad Material: ABS Optional Color: Silver Black/Iron Grey/Rose Gold Support System: for ANDROID, for WIN, for OS Number of Keys: 22 Keys Wireless Support: 2.4G Wireless Keyboard Lifespan (keystrokes): 3 Million Times Response Speed: 5 Milliseconds Wireless Transmission Distance: approx. 10m/32.8ft Operating Current/Voltage: 0.25mA 3V Battery Type Capacity: 2 x AAA (not included) Use Time: 80 Hours Packing List: 1 * Numeric Keypad (Battery Not Included) 1 * User Manual 1 * Receiver Notice : 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. [22 Full-Size Keys]: With 22 full-size silent keys, the wireless number pad is easy to identify, helps you get fast and accurate numeric data entry [2.4GHz Wireless]: This number pad and mouse combo adopts 2.4GHz wireless technology which ensures more stable performance; Plug and play with mini USB receiver, fast data transmission, no delay and no cat [1200 DPI]: 1200 DPI responsive mouse provides flexible point clicking, Includes backspace key, number lock, input, page down, page up, improving your work efficiency [Plug and Play]: This number pad and mouse combo is plug and play, no drivers to install, providing more convenience, suitable for home, office and travel [Wide Compatibility]: This numeric keypad and mouse are suitable for Win 2000, for Win XP, for Win Vista, for Win 7, for Win 8, for Win 10 operating system See more product details [22 Full-Size Keys]: With 22 full-size silent keys, the wireless number pad is easy to identify, helps you get fast and accurate numeric data entry [2.4GHz Wireless]: This number pad and mouse combo adopts 2.4GHz wireless technology which ensures more stable performance; Plug and play with mini USB receiver, fast data transmission, no delay and no cat [1200 DPI]: 1200 DPI responsive mouse provides flexible point clicking, Includes backspace key, number lock, input, page down, page up, improving your work efficiency [Plug and Play]: This number pad and mouse combo is plug and play, no drivers to install, providing more convenience, suitable for home, office and travel [Wide Compatibility]: This numeric keypad and mouse are suitable for Win 2000, for Win XP, for Win Vista, for Win 7, for Win 8, for Win 10 operating system