ProtoArc Ergonomic Mouse, EM11 NL Bluetooth Rechargeable Wireless Vertical Mouse, 3 Multi-Device Connectivity for Computer/PC/Laptop, 2.4GHz Optical Mice for Windows, Mac OS, BlackClimatePartner certified

I didn't want to believe it, but...I bought it on sale, and WOW! Yup, a mouse did that.The initial quality and boxing are as good as you will find from any manufacturer. I do wish manufacturers would work towards the most sustainable packaging, but what is provided is very well done.Mouse:-- Soft touch outer "skin" that is very comfortable-- Dreamy, silent buttons and scroll wheel attenuated silently and with soft, accurate positioning-- Excellent 5-button + configuration and connection options making it a fantastic full-sized mobile ergonomic mouse.My hand measures 7.6" on A axis, and I feel the mouse is adequate, but understand I am at its limit. Still, it feels great and performs as expected, and reliably as expected. I have always taken a light touch to mice and this shape encourages that relaxation for my hand at finger length.As a vertical ergonomic mouse, I have used several from Logi, Anker, and others… this is by far and away the mouse that checks all the boxes, and for an incredibly reasonable price.Super-easy setup (either Bluetooth, or wireless adapter included), and the battery has outlasted expectations for its first charge so far, in writing this early review.Cheers - Nguyen should be proud of this. I'm an old-time user from the East Coast USA, and have mice that date over 30 years old, and no one has really ever put together a complete ergonomic mouse that works ubiquitously*. This is the winner.*I use "Mouse Fix" on macOS for button programming - but it runs natively on both macOS and Windows just fine.**I would also like to see a vertical measurement on vertical ergo-mice - wider hands need the height, but even at the limits of this mouse, I feel okay and relaxed on this mouse with my long-time HandStands bean-bag wrist-wrest.

I spend a lot of hours on the computer for work, and this mouse has made a huge difference in comfort. The ergonomic design feels very natural in the hand, reducing the strain I used to get in my wrist and fingers. The buttons are responsive, the scroll wheel is smooth, and the wireless connection is stable with no lag. Battery life is impressive—I can go weeks without recharging. It took a day or two to adjust to the shape, but now I can’t imagine going back to a regular mouse. A great choice if you want something comfortable, reliable, and well-built for everyday use.

Fantastic mouse/keyboard combo. The mouse took some getting used to, because of my larger size hand, but I adjusted by using my middle finger on the left click giving me a more natural feel. I hope they come out with a 2nd version for larger hands. The battery life and comfort are amazing. The mouse has really responsive DPI control, and the button layout is user friendly. All-in-all a very well designed, low profile ergonomic device.

Real customer: this mouse exceeds my expectations given the price (half of the logitech counterpart). It's very comfortable for relatively small hands, easy to connect via bluetooth (or USB) to my laptop, and the packaging/product seem really well made and of high quality. The mouse slide smoothly and has two buttons on the side for customizable functions. It has quite click - I don't need it at home but maybe useful in office environments.

I have Med-Large hands which I think is important to remember when you read this review. Hand size is very important when you're considering vertical mice. For me, I switched to vertical mice due to carpal tunnel a couple years ago, and it really helped to eliminate it. I went to Best Buy and tried both the Logitech Lift and MX Vertical. The Lift is for smaller hands and I didn't like the feel of it. So I bought the larger MX Vertical despite the $100 pricetag with the hope that it'd help my carpal tunnel. It did, but unfortunately, now its suffering from the double click issue that apparently is a feature of Logitech mice. So I began the hunt for another vertical mouse that didn't cost +$100. I knew I wanted one that was for Medium to Large hands, so I tried 3 different ones that said they were for larger hands or had similar measurements to the MX Vertical. None of them I ended up keeping for various reasons. So I bought another one hoping for better luck.Pros: This mouse feels great in the hand with a nicely textured surface. It also has some of the most satisfying buttons of any mouse I've tried with a very tactile yet soft, quiet click. The scroll wheel is nice much like the MX Vertical. The shape was exactly as described and felt like a hand shake. Despite the smaller size, I really enjoyed holding this mouse and my wrist did not drag on the mouse pad. Finally it has a rechargeable battery (which can be a con for some) and was under $20. It also comes in different colors.Cons: The con is that my hands are too big. They recommend this mouse for S-M hands vs the M-L of the others I tried, and I definitely agree. My little finger drags horribly if i put my hand in the "correct" placement. I got around this by putting my 1st finger on the left side of the first button and my 2nd finger on the right, and then use my 3rd finger as the right click, which gave my pinky room on the mouse. It worked okay but wasn't ideal. I really wish ProtoArc made a super sized version of this mouse. (Side note: I saw a knock off version of this mouse with the exact same measurements that said it was for M-L hands. Thank you ProtoArc for an accurate description)Ultimately I ended up returning it due to my hand size, but I really wish either my hands were smaller or the mouse was larger so that I could have kept it. Please ProtoArc, make a larger version for those of us with larger hands. If you did that, I'd buy it immediately.