Perixx PERIMICE-713L Wireless Ergonomic Vertical Mouse – Left-Handed Design with 6 Buttons, Adjustable DPI 800/1200/1600 – 2.4GHz Optical Mouse for Medium and Large Hands

Update after ~3years of heavy usage -Overall, very satisfied with the mouse, unlikely I will ever go back to a standard flat mouse post this purchase. The vertical mouse is super comfortable to the wrists.The mouse wheel has started getting wonky, scroll down sometimes results in a scrollup. The other buttons are still fine. Time to purchase a new one.--After ~1 month of usage.The mouse is angled so that the palm is a near natural position, and helps usage for prolonged duration.While adjusting to the mouse position is almost natural, mouse movements needs some adjustment. The resting pressure point also shifts to the bottom left of the palm compared to the wrist joint in case of a regular mouse.Since there is a DPI switch as well, one needs to play around for optimum settings.The mouse seems to be well built and has an adequate cord length.On the flipside, minor niggles, the mouse buttons are made of shiny smooth plastic, which does not feel nice and is a dust magnet.There is a built in LED that is a bit distracting.

Really ergonomic, keeps hand in near-natural position, suitable for lefties.I say go for it

This is a quality product, but I've noticed that my hands tend to sweat more than usual when using it, something that never happens with a regular mouse. If you're dealing with severe RSI, I would recommend giving it a try; otherwise, you might be better off sticking with a traditional mouse.after 5 days of usage still not able to adapt to the mouse, it is easy on the fingers but hard on the wrist.

Mouse useful. Serves its purpose well

Delivery is a little bit long. anyhow mouse itself is very good.