The Logitech Wireless Combo MK330 mouse and keyboard deliver absolute mobility. The USB receiver is so small that you can leave it plugged into your notebook without it being damaged. Keyboard features: - Music and volume controls - Hotkeys for e-mail and Internet browser - Hotkey to switch between applications - Calculator button - Backspace on the numpad - Standard size - Height adjustable - Splash-proof up to 60 ml Mouse features: - No. of keys: 3 - 2 standard buttons - 1 tilt wheel for horizontal and vertical scrolling - Battery LED