[18 Full Size ]With 18 Full-sized, quiet , the wireless number pad is easy to identify, help to fast, numeric data entry. Including Backspace key, Number lock, Enter, Page down, Page up etc. [2.4GHz Wireless, Plug & Play]The number keypad for laptop adopt advanced 2.4GHz wireless technology, plug and play with mini USB receiver, fast data transmission, without delay and no caton. The working distances are up to 33FT(10M). [15degrees Ergonomic Design]The great ergonomic made this usb numpad perfect for all day use without wrist fatigue or discomfort. The low-profile can help to reduce typing noise for comfortable and quiet working experience. [Slim and Compact]The laptop external keypad is sleek and slim and quite light for size, which is pretty protable to take with you. Use AAA battery (Not included) for power, convenient and . [Wide Compatibility]Wireless usb numeric keypad works with laptop and desktop computers that have Windows 2000, XP, Vista, 7, 8, 10, Linux operating and OS 9, X, 10.6 & higher, NOT FULLY compatible with system. Colour:black Material:plastic Package Contents: 1 x Wireless Number Pad Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.