Mouse with 18 buttons:

Two buttons with a scroller in the middle is an old time mouse. 

Wireless mouses are also old type.      But, did you ever see 18 buttoned mouse? Here it is...

The one you see in the above image is that mouse with 18 buttons named War mouse Meta. This takes only 512 byte ram. In this mouse, every button does a certain purpose. You can assign each work for every button with the help of ‘metamodware’ software already installed in the mouse.

For example, in the word, you can assign cut, copy, paste, Self-check to these buttons.

This mouse is of a great use to Graphic designers and Gamers.

Hoping this article surely helped you a lot.