Using a computer without having a mouse is a difficult task. You get more buttons than usual with this mouse, so it can perform a variety of tasks.
From Senetic
Wireless Ergonomic Optical Mouse 6D (Buttons), 2.4GHz, rechargeable battery, black
Memory C
Digitus Ergonomic Vertical Wireless Mouse
Clove Technology
Digitus Ergonomic Vertical Wireless Mouse