Power Supply: 2x AA Batteries, 18 Months Battery Life
Wireless Distance: Up to 33 feet
Windows 8, Windows RT or Windows 7
Dimensions (WxDxH): 2.4 x 4.1 x 1.2 inch
Weight: 4.0 ounces
Logitech Unifying receiver
2 AA batteries (pre-installed)
* Product descriptions and part numbers are subject to change, and may not reflect manufacturer product changes. Please check the manufacturer's website and use the item's manufacturer part number to find the most up to date product description.