Package contains keyboard only, no batteries. Setup is simple: just plug the receiver into a USB port and start typing right away. The keys are light and quiet, which can greatly improve your work efficiency. A must for digital enthusiasts. User-friendly: the keyboard light indicates usage status, and the ergonomic tilt and non-slip pads ensure better comfort. It also features an auto-sleep function to conserve energy. Advanced 2.4 GHz wireless technology: enjoy the convenience and freedom of wireless connectivity with reliable, fast data transmission and minimal lag or interruption. Enables keyboard operation up to 33 feet from the receiver, using standard USB ports to create a wireless workspace. Portable design: this compact and lightweight digital input solution includes an integrated USB receiver for easy portability, allowing you to work efficiently and comfortably anytime, anywhere.