The SPEC Research HW3003/49UR is an excellent mouse for the price. This compact 800dpi optical mouse has a bit of attitude with its contemporary look! The smooth scroll wheel lets you go easily through your applications and documents and doubles as a third mouse button. Just plug the mouse into your computer's USB port, and you’re done: you won’t need any drivers or software. Add a little flair to your basic mouse! Hand Orientation: Both Hands Maximum dpi: 800 dpi Features: Compact and lightweight Dynamic resolution with fast tracking speed Universal scrolling function Parts: 1 year limited Labor: 1 year limited