Anir Ergonomic Vertical Mouse Pro

Anir Vertical Mouse Pro Large, Black - KBC-AN1B/L The Anir mouse operates like a standard optical mouse but is held like a joystick. The see-saw thumb switch at the top provides left and right mouse clicks, with a third button under your fingers. Clinically proven to reduce muscle strain and discomfort Ergonomic design ensures natural, comfortable arm movement Reliable and durable optical technology Maintenance-free optical sensor with no moving parts Available in two sizes: 'Small/Medium' and 'Large', and in both wired and wireless versions To determine your size, measure the width from the left to right side of your knuckles: 70mm - 88mm: 'Small/Medium' 88mm - 100mm: 'Large' This is the wired 'Large' Anir mouse.