Product Description The Dell Wireless Keyboard and Mouse- KM636 features a sleek, contemporary design that delivers reliable wireless performance in virtually any workspace at a price that businesses will appreciate. Providing the convenience and performance of a wireless workspace, the KM636 is designed to withstand the rigors of office work, while providing a comfortable, full multimedia user experience through the keyboard’s contemporary design and chiclet keys. Featuring a 12 month battery life, multimedia shortcut keys and optical tracking, the keyboard and mouse combo offers a dependable and enjoyable user experience. -Other Characteristics: -Adjustable keyboard height: No -Backlight: No -Batteries included: Yes -Buttons quantity: 2 -Colour of product: Black -Connectivity technology: Wireless -Keyboard form factor: Standard -Keyboard integrated devices: No -Keyboard language: English -Keyboard layout: QWERTY -Keyboard style: Straight -Material: Plastic -Mouse included: Yes -Movement detection technology: Optical -Number of batteries (keyboard): 2 -Number of batteries (mouse): 2 -Number of scroll wheels: 1 -Numeric keypad: Yes -Power source type: Battery -Purpose: PC/server -Quick start guide: Yes -Receiver included: Yes -Scroll: Yes -Scroll type: Wheel -Service life of battery: 12 month(s) -Surface coloration: Monotone -Windows keys: Yes -Windows operating systems supported: Yes -Wireless receiver interface: US