Posturite Penguin Wired Ambidextrous Ergonomic Mouse - Vertical High Precision Computer and Laptop Accessory - Compatible with Windows and Apple Mac - Large, Black/Silver

The Posturite mouse is excellent for me. I tried with two different sloping mice; these helped with the angle of my wrist, but acted as a wedge to force my thumb into an uncomfortable position which produced strain in my hand which I didn't have before.This is the only mouse I have found which has eased strains in my hand and wrist.Two smaller issues:1) I went for a mouse slightly smaller than recommended, and it's fine for me.2) I am using a slower "Push DPI" speed than I had done before (a button the bottom of the mouse controls this), to enable me to have better control over the mouse pointer for clicking on small buttons and crosses on the screen. At a slower speed, I am able to control the mouse well. I did notice issues with controlling the mouse at faster speeds initially, and I also found that if I put my little finger on the desk beside the mouse base, that gave me more control (and it would be easier if the base were a little smaller); at the slower speed, I don't need to do that.It's more expensive than other mice, but the relief it brings is well worth the price.

I have been using this mouse for some weeks at the time of writing. I suffer from some RSI related tendon discomfort from mouse clicking with my middle and fore fingers of my left hand. I tend, with a normal mouse, to flex the whole of my finger from the 3rd knuckle (the one closed to the wrist at the base of my fingers). This mouse has completely eliminated the associated discomfort that I feel in the tendons that control the flexing from the knuckle. It does this by promoting a finger position that encourages the curling of the finger to press the buttons, rather than flexing at one joint. The curling action uses a different set of muscles and tendons and allows the resting of the other tensions and muscles that are the problem. The rest really works as I have been able to use a normal mouse for a day without problems when I have forgetton to pack the penguin. In addition it holds your hand in a neutral position that is good ergonomically. It is a wonderfully designed product and I couldn't go back to a normal mouse now.

Bought to try and address a pain in my right hand, this mouse is pretty neat in that you can use it left or right handed. I followed the size guide before buying, even printing off the PDF and matching my hand against the printed picture. This led to me buying the large sized version which I feel is just a little too big - despite my hands measuring comfortably over the "large" indicator line by a good 2cm. So I would advise caution when sizing your hand as it feels like it's a bit larger than it should be. That said, it could be part of the design but it does feel a little awkward.The wireless version comes with a relatively smal USB dongle that the device automatically connects to pretty quickly and it's immediately recognised by Windows as a standard mouse needing no additional drivers. The dongle will protrude from the side of your laptop quite a bit - fortunately there's a little covered reces in the base of the mouse to house the USB dongle when in transit.The mouse has a horizontal scroll wheel and two buttons - these are the active controls that you will use. Sitting underneath your little finger is a switch that changes position when you use the mouse right vs left handed, this effecively reverses the direction of the scrollwheel. It may sound odd but it makes perfect sense when you're using it.The mouse also has a number of resolution settings, which can be altered by pressing a button on the underneath of the unit. This has been a really useful feature for me - if yo'uve never used a vertical mouse before and, especially if you're using your "wrong" hand, then having a super-sensitive mouse is the last thing you need. So i started with it on a relatively low sensitivity meaning I had to move the mouse a large distance to cover one side of the screen to the other. As I got more used to useing the new mouse (and the wrong hand) I was able to turn up the sensitivity, improving my productivity without being really frustrated from the outset.The battery lasts a really long time. A USB charging cable is supplied, and here's my only gripe - rather than using micro USB or USB-C, they've used a proprietary charging port so if you lose the cable you're in trouble. Battery charge is indicated by an LED behing the "penguin/spine" logo on the unit. So far mine has lasted about a month without needing a recharge.It's missing some of the other buttons that I'd come to rely on with my prevous mouse (A logitech Performance MX), like the back button for browsing etc. BUt that's not the end of the world. What's more important is that it has helped me to use my other hand, relieving pressure on my main hand which had started to suffer from the early signs of RSI.So if you're looking to prevent or manage RSI, this is a great mouse. Particularly if you're prone to moving your mouse by flexing your wrist but not moving your arm. This kind of movement can put a lot of strain on your hand - the penguin mouse makes this impossible by resting the heel of your hand on a platform at the base of the mouse itself. The only way you can move it is to move your whole arm, significantly relieving the pressure from your usual mousing style. It's got a few quirks but RSI is something you'd really rather not have, so even though it seems expensive, it's cheap consider the problems it can help prevent.

São 3 tamanhos, precisa saber qual se encaixa em sua mão. Mão grande ficará ruim no small, assim como mão pequena não ficará confortável no large.

Very straightforward to use. Just plug and play. Rechargeable. Very comfortable to hold. Can be used with left or right hand in one device. One issue is the right click button where I would use my middle finger is too high. It’s higher than my natural placement of the finger, so each time I feel like I have a second delay as I have to consciously move my finger up to right click. It can be annoying as you mind would be thinking about the particular thing that you need but then you have that 1 second interruption because of the right click you need with the mouse. These mouse clicks should have been more of muscle memory if they had designed the right-click button a bit lower. Big deal? Yes, for me. I have switched to use Evolent instead.

This is the 2nd one I've had. First one lasted 4 years before the wheel part went wonky. Well worth having.

I though this mouse was a little expensive before buying it... I was very wrong, because it's exactly what I was looking for... my Carp Tunnel problem is better now (after 2 weeks using it). Thanks

Great mouse overall for someone who experiences pain when squeezing a normal mouse or one that is positioned diagonally such as the Logitech.Took a week or two to get used to. Does a good job of relieving carpel tunnel pain and is now is hard to go back to a normal mouse!It’s a bit expensive for what you get with the somewhat cheaper materials, but it has good build quality. I’d say it’s a overall a good deal, especially worth it when you don’t have any more pain.