Package contains keyboard only, no batteries Setup is simple: just plug the receiver into a USB port and start dialing right away. The keys are light and quiet, which can greatly improve your work efficiency! A must for digital lovers User-friendly: the keyboard light lets you know how long the keyboard has been used, and the ergonomic tilting and non-slip pads ensure better comfort. It also has an auto-sleep function to save energy ADVANCED 2.4 GHz WIRELESS TECHNOLOGY: You'll experience the convenience and freedom of wireless with reliability and fast data transfers with virtually no lag or downtime. Enables keyboard operation up to 33" from the receiver, using standard USB ports to create a wireless workspace Portable design: This powerful digital input solution with an integrated USB receiver is compact and lightweight for easy portability, allowing you to work safely and quickly anytime, anywhere.