Anker Wireless Vertical Ergonomic Optical Mouse for $20 + free shipping w/ Prime

This Anker Wireless Vertical Ergonomic Optical Mouse is 33% off at Amazon. It uses a USB receiver stored in the base of the mouse and has next/previous buttons for browsing. It works with both Windows and Mac. Shipping is free for Prime members. Buy Now at Amazon

Features

added next/previous buttons 800 / 1200 / 1600 DPI resolution requires 2 AAA batteries (not included)