Advanced 2.4GHz Wireless Connection: The wireless number pad and mouse combo use latest 2.4GHz wireless technology, just Plug and Play！No drivers need to be installed. Wireless mouse & numpad share ONE USB receiver. Do not occupy other USB port.【NOTE: The USB Receiver is inserted in the battery compartment of of the keypad or mouse】 | 19 Keys Mutil-function Wireless Number Keypad: This wireless number pad with quick rebound action and allows fast data entering without missing a key. Supports NumLock, ESC, Tab, Delete, etc. With a shortcut key which can open the computer calculator directly. Including the "00" key, perfect for those who need to input numbers frequently on their laptop or desktop. The Multi-Function 19 Keys Wireless external number keypad for a laptop is more unique than most keyboards. Power Supply by 1 x AAA Battery ( not included ) | Noiseless Click Mouse with 3-Level Adjustable DPI: The slim wireless mouse with high sensitivity gives a soft click with less noise, no more disturbing for others with the loud clicking sound. This wireless mouse with 3-level DPI settings (800/1200/1600) to meet your multiple needs. Great wireless mouse for home and office. Add a power switch button on the mouse. Power Supply by 1 x AA Battery ( not included ) | Easy to use & Portable Design: This wireless number keypad and mouse combo uses the latest 2.4 GHz Wireless technology, plug and play, no device drivers, signal transmission stability, almost no delay, working range of up to 32.8FT. Ultra-slim and wireless features give you a great option to travel anywhere with a numeric keypad for your laptop. | Numeric keypad Compatibility: This wireless mouse and wireless number pad work with laptop, notebook, desktop, PC computer. Compatible with Windows 2000 / XP / Vista / 7 / 8 /10/11 operating systems. 【NOTE: The usb keypad is not fully compatible with Mac OS system,the function keys do not work while the number part 10 keys 】