Value in a Notebook Optical MouseThis affordable, compact mouse with Microsoft Optical Technology is an ideal companion for on-the-go notebooks where work space is at a premium. It delivers precise cursor control on a wide variety of surfaces, and is comfortable in either hand.Key Features: Size (type)Mini Mouse ColourBlack LED ColourNone TrackingOptical Buttons3 WheelYes DPI800 ConnectionWired-USBProgrammableNo On-board MemoryNone Ergonomics (hand)- Dimensions (LxWxH)5.6 cm x 11.1 cm x 3.