Logitech Wireless MK220 Combo Keyboard and Mouse, Black -920-003168 Brand: Logitech 2.4GHz wireless connectivity Sleek design Color: Black Model Number: MK220-920-003168 Keyboard Length: Receiver plastics: 75% post-consumer recycled material 381 mm Width: 112 mm Height: 17.78 mm Weight: 320 g Mouse Length: 107 mm Width: 60 mm Height: 40 mm Weight: 112 g Wireless range: 10 m 1Wireless range may vary due to environmental and computing conditions. Keyboard 10-Key Number pad Music Controls Up to 5 million keystrokes (excludes number lock key) Key type: Deep-profile Spill-resistant Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid. 2 AAA batteries (Alkaline Batteries) Mouse Sensor Technology: Smooth Optical Tracking Number of Buttons: 3 (Left/Right-click, Middle click) Scrolling: line-by-line Scroll Wheel: Yes, optical 2 AA batteries (Alkaline batteries) Sustainability Mouse plastics: 66% post-consumer recycled material Keyboard plastics: 44% post-consumer recycled materia mk220 logitech wireless combo logitech mk220 wireless keyboard on/off switch logitech mk220 review logitech mk220 usb receiver replacement logitech mk220 price logitech mk220 driver download is logitech mk220 compatible with unifying receiver