Please see the photos of actual items that you are buying.Product description From the Manufacturer

Add innovation and style to your desktop. This wireless optical mouse offers Tilt Wheel Technology and three times longer battery life for greater productivity.

Tilt Wheel Technology
Scroll every which way. Now you can scroll horizontally as well as vertically through documents and Web pages. The entire wheel tilts, acts as a button, and reacts smoothly to your speed.

Three-Times-Longer Battery Life
Finally, a solution to the top wireless hassle -- now you can work longer without interruption. Many users experience a half year of battery life!

Smart Receiver
Work wirelessly without intrusion. Take advantage of smart technology that automatically detects interference, so you don't have to worry about interruptions.