SlimStar 8000ME is a wireless combo from Genius that brings simplicity, fashion, and elegance to your lifestyle. The anti-interference function offers reliable 2.4GHz transmission and longer operational distance. Control and convenience are at your fingertips with this comfortable full-size keyboard and 1000 dpi optical wireless mouse that provide great working efficiency and performance. The ultra-slim keycaps provide comfort when typing. Battery Included: Two Alkaline batteries (1 AAA for keyboard, 1 AA for mouse)