TECKNET 2.4G Wireless Ergonomic Vertical Mouse(USB Receiver, Rechargeable)

Honestly, my hand feels more comfortable with this mouse, but my hands are small, so I gave it to my brother. He says that: It’s very quiet — you can’t hear the clicks at all. The battery lasts about a month with all-day office use. It’s very nice to use for work. The glides are good, but they could be better, even if that meant a slightly higher price. A good choice if you care about those things.

AMAZing product!

Worked great, good value for money!

This mouse is designed to be ergonomic. It does move the hand into a more natural position, which is more vertical than horizontal. This is good. It is important to understand that it may not at first feel natural to a user who has been using the more traditionally-shaped mouse for many years. But it will keep the carpel tunnel area of the wrist open and properly aligned with the forearm bone arrangement. This is key. The downside of it is that my hand is of medium size (when fitting a glove). As such, I found the 'depth' of the mouse to be made for larger hands. As a person gets older, he or she may experience a shake to the hand or fingers, such as when experiencing what is called 'essential tremor'. I found mine exacerbated by attempting to press the left mouse button, which in this case requires a squeezing between thumb and forefinger. This 'squeezing' motion is not natural from more traditional mouse usage, and must become an acquired taste. (Will it become a big contrast to hand and finger motion when using the keyboard?) Perhaps it will get better with more use. Time will tell. I also found that the operating system does not see a name for this device during the recognition of it when plugged in and being configured. Obviously a bit of an overlooked detail in the design of the USB receiver. The mouse has a built-in battery system, and is supplied with a good cable to charge it. Battery life is not yet known, but might become an issue if it runs down during use and must be recharged before continuing. Don't know if there is a warning light. Also, it has very poor instruction manual. There is supposed to be a way to change the DPI, but I could not figure how to do so. UPDATE: The seller did contact me and was very nice about it. Was also willing to take my feedback, and to provide missing information. That was helpful. It remains to be seen if they will create a proper user document, and/or create a new size design for the device itself, such as models for small, medium and large hands.

User friendly, feels comfortable on your hands, ergonomic