[Upgraded Version Keypad]: Compared to our ordinary Version keypad, it supports NumLock, ESC, Backspace, Del etc. With shortcut key which can open the computer calculator directly. Great accessory for Small Laptops Without A Separate Keypad.[Bluetooth 30 Connection]: Bluetooth 30 technology provides a cable-free & clutter-free connection, the external 10-keys full keypad extends your existing keyboard, operating distance 10m.[ Saving]:It enters into sleep mode automatically, energy saving, extended battery life; Any key to awake up the keypad.[USER FRIENDLY]: Full-size 22 keys, soft buttons for this Multi-Function wireless Number Pad. Keys are easy and less noise to press, greatly speed up your productivity. Ergonomic tilt and anti-slip pads on back provides comfort.[COMPATIBILITY]:Compatible with Windows 98SE /ME /2000 /XP /Vista /7/10, Linux 24 or above operating systems. Numeric keypad is not fully compatible with system (Function keys do not work, while number keys part works ).Battery Required:2*AAA batteries(not included)size:123*85*22cmMaterial:ABS plasticcolour:blackPackage Contents:1 * Numeric Keypad1 * User ManualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.