ProtoArc Vertical Wireless Trackball Mouse, EM05 Bluetooth Ergonomic Rollerball Mouse Rechargeable Computer Laptop Thumb Mouses, 3 Device Connection, Compatible with iPad, Mac, Windows PCClimatePartner certified

Best trackball mouse on Amazon.I have tried various other brands: Elecom, Perixx, Logitech. This Mouse is superior in terms of ergonomics, affordability and compatibility.As an improvement, I would like to see a more premium version:1) With better switches, the mouse buttons don't seem like they'll last - but I could be wrong.2) A wired option.Overall very impressed by this ProtoArc mouse. Definitely recommended.

I love this mouse! It has helped a lot with neck n shoulder pain. And paired with a smaller keyboard I can keep the best posture. Buttons are easy to click, rollerball takes a little getting used to but after a while you don’t even think about it. Changing the sensitivity is quick n easy with the little orange button n useful when using software for design or animation.

It is a great product! Very comfortable to use and has a great construction quality. The only flaw I see in its design is that it's somewhat bulky. I'm a digital nomad, and portability is a key factor for me; to be honest, this one is huge! Not portable at all. Other than the size, it's a great gadget, seriously! I will keep it only because it's extremely comfy and satisfying to use.

I’ve used this mouse for a good while now since I bought it. Would absolutely buy it again! My hand is thanking me because the design is so comfortable and natural. The speeds are customisable and there’s more than one connection plus push buttons. The ball is easy to clean too, I love it.

A brilliant bit of kit. Seems to be very accurate and stable. Buttons well placed and I love the scroll wheel. It seems really strong and smooth.It fits in the hand beautifully and all the buttons fall easily under the hand. Buttons seem very positive. Love this device.

This is fantastic, the sore wrist has eased, so much easier than the other mouse which I have used. Using this at both at home and work.

Good:- Solid and well-made- Nice and chunky- Ergonomic shapeBad:- The track ball is really scratchy when rolled, meaning that it is inaccurate. The pre-selectable pointer speeds are either too fast or too slow, meaning that navigating anywhere is difficult.- The mouse is simply no good for large hands with long fingers. My fingers extend well beyond the mouse and track ball, making it uncomfortable to use.Overall, I think I'll be returning this for something better.

This vertical trackball mouse offers excellent ergonomic design and comfortable use. The wireless connectivity and rechargeable battery make it convenient for use with multiple devices. However, the trackball is too loose, resulting in unintentional movement when lifting your thumb. This can significantly impact accuracy, making it frustrating for precise tasks.