MISSING BATTERY COVER UNTESTED Microsoft Wireless Comfort Keyboard 4000 Model 1045 offers an ergonomic curved design intended to improve wrist posture and comfort during long typing sessions. Finished in a sleek silver and black color scheme, this peripheral includes a built-in cushioned palm rest and a full numeric keypad. The top row features dedicated multimedia keys and customizable hotkeys for quick access to favorites and common tasks. Please note that this listing is for the keyboard only; the wireless USB receiver and batteries are not included. The battery compartment is clean and free of corrosion.