2.4G Wireless ConnectionAdopts advanced 2.4GHz wireless technology, no device driver required. Just plug the receiver into the USB port and start using the keyboard straight away with no delays and drops and fast data transfers. Convenient & Quiet18 independent keypads with NumLock, delete for easy input and correction. Made of high-quality materials, it is comfortable to the touch, precise in control, good in resilience, fast in response, and quiet on keys. Slim and ComfortableErgonomic slanted design can provide comfort and help reduce wrist pressure. The keys are thin and the mini-sized number pad takes up so little space that you can take it with you in your bag or document pouch Long Service LifeThe keyboard is protected by a non-slip rubber base to prevent it from sliding on the desktop. (note that no batteries are included)