Brand Name: Dell, Manufacturer Part Number: NNP0G Product Type: Mouse, Pointing Device Connectivity Technology: Wireless, Pointing Device Wireless Technology: Radio Frequency, Movement Detection: Optical, Movement Resolution: 1000 dpi, Number of Total Buttons: 3, Scroller Type: Scroll Wheel, Ergonomic Fit: Symmetrical, Pointing Device Host Interface: USB, Color: Black, Package Contents: Wireless Mouse - WM126 - Black, 1 x AA Battery, USB Receiver, Documentation, Limited Warranty: 1 Year.