Logitech MK275 USB Wireless Keyboard Mouse Set 1. Long-distance wireless connection: Using Logitech advanced 2.4GHz wireless technology, it can achieve fast and stable connection without delay and dropped frames in the range of up to 10 meters. 2. Eight shortcuts: Quick media control with one touch, controlling movies, music, internet, email, playpause, volume, and more. 3. Full-size keyboard: Full-size keyboard with numeric keypad, arrow keys and nine F-keys for comfort, convenience and durability. 4. Compact mouse: This comfortable mouse fits easily into your computer bag or pocket and can be used with your computer. 5. Long-lasting battery life: The keyboard battery has a battery life of up to 36 months, and the mouse battery has a lifespan of up to 12 months. With a power switch, you can avoid months of battery replacement. (The mouse requires 1 AA battery and the keyboard requires 2 AAA batteries, not included).