You are offerding on a lot of 100 Wireless Mouse, Black in color.Each is brand new, packed in their own package, and comes with a USB 2.0 Receiver.Optical Tracking (Laser), and great build quality.Features that put it ahead of its competition:-It's Wireless!-Scroll wheel included-DPI is adjustable.-Forward and Backward Buttons-Optical TrackingThis is the most mouse you can get in its pricing tier.Perfect for any personal, school, work, or enterprise settings.