HP KM270 Wireless Mouse and Keyboard Combo-AB3D5AAComfort meets durability Sensing range of up to 10 meters With its 800 1200 1600 DPI optical sensor, this mouse works on almost any surface with astounding accuracy Free yourself from wires with a 2. 4 GHz wireless connection. LED indicators illuminate Number Lock, Caps Lock, and Scroll Lock Wireless USB Dongle Wireless combo 3 year replacement warranty. Warranty of the Product is Limited to Manufacturing Defect Only. No Physical Damage, Mishandling,