Posturite Penguin Wireless Ambidextrous Ergonomic Mouse - Rechargeable 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.

brilliant product. no more mouse rsi enhanced further by the fact it can also switch quickly between left and right handed. has even made me a little more ambidextrous! Make sure you buy the right size - I needed the larger model, the smaller one would not have worked with my large hands! If you have just a hint of rsi don't let it get worse (it's horrible!) and don't hesitate buying one of these - does exactly what it says on the tin :) Does take a little getting used to as with anything different, but very easy and way better than any other options i've tried. And excellent customer service too - 'scrolling wheel' started playing up year or so after purchasing - replacement being sent.

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.

I've used various ergonomic mice, mats, and keyboards for 20+ years, so when I was starting up a new business, with all the computer woman-hours that entails, I put in some serious research to find the best mouse for me, whatever the budget. I ended up plumping for this - mostly because I have small hands, but also partly, I cannot lie, because my inner 6th-form boy got a snigger out of its appearance (the latter wouldn't, of course, have convinced me to buy it had it not been right in all other aspects other than cost, but eh. What can I say? I don't get out as much as I used to, and a bonus snigger is never a bad thing, right?). It did exactly what I needed for a good while - comfortable for my paw, and sufficiently responsive for what I was doing (LOTS of prose typing, much spreadsheet action, website design/content creation, and entry-level video editing). As is so often the way with little tech, though, the charge port went shonky before the mouse itself had. As we all usually do with this particular irritation, I managed to manoeuvre/contort the wire (holding it at EXACTLY the right angle for the duration) to overcome this while charging for several months, until the port eventually gave up the ghost completely. I'd been sufficiently happy with the mouse until then to simply order a replacement, but that's now gone exactly the same way. I know it's not a lot of money in the grand scheme of things, and all tech has a built-in dead-by date, but if I'm paying quite a bit more than the other small-paw option I was considering (Logitech's Lift), I don't expect to have to replace it quite so frequently (first Penguin bought Sep '20; second and-now-also-defunct one bought Feb '23). It's a shame, because I was very happy with my Penguins. Until I wasn't. Based on my experience, I'd say if you've got enough cash sloshing around that having to replace your comfy mouse every couple of years (and for £60 more than the obvious alternative option) isn't a problem, then go for it if your needs are similar to mine. But for me, it's time to say hello to Logitech, and see how I get on. Hopefully I'll get more bang for my buck. My just-ordered Lift won't elicit the sniggers which this design has when visitors clock my mouse, but I'll happily live with that if it means not having to splash out for replacements so frequently.

For months I was struggling with reoccurring RSI. This amazing mouse has solved all those issues for me! I have to work long hours on the computer for my job, regular mouses kept making my RSI worse, but within a few days of having this mouse all my pains and issues are practically gone and I can still work, sometimes even longer now. My Chiropractor recommended this mouse for me and for the life of me I can't understand how these are not used everywhere!!! A truly great mouse. It comfortably fits my hand, glides properly and the scroll wheel and mouse buttons seem so natural once you get used to it. Highly recommended if you need a mouse for long hours which will not strain your wrist/arm!

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.

Technically I should be returning this, as I don't believe this product meets the standard of being fit for purpose, but I'm pretty sure I'd be met with a ton of resistance from either Amazon or Posturite. I don't mean just my particular mouse either, this isn't because of some faulty aspect. The fault is in the design, sadly. I can appreciate the need for a new type of mouse design, something that really hits the sweet spot for ergonomics and performance, but this ain't it. Quite simply, it is not of any use whatsoever to anyone who needs accuracy in their work. If all you do is browse some web pages for a few mins a day, I STILL don't recommend this as it is too expensive for your needs! But if you are someone who works on their computer, this thing will drive you mad. It is impossible to use this with any subtlety, and often times just clicking the awful crunchy buttons will move the mouse from where you want it. The base is ludicrously big, meant to serve a purpose as a hand rest of sorts but I actually think it hurts the product. If it weren't there, the mouse would at least be more accurate instead of just sliding around like Bambi on ice. As for ergonomics, it fails here too. You initially feel some relief, but that is only because the area being strained has moved somewhere else. Long term, this thing will be no better than any other vertical mouse (which I have already gone back to). It has a DPI button on the underside (bone-headed idea) that you have to reset every time you turn your computer on and cannot realistically adjust on-the-fly, and it also has no additional buttons that we've all gotten used to on other mice (like a back-page button). All in all, this thing feels like a device that was made by someone who studied ergonomics but has never actually used a computer. I am very disappointed, having dropped around €100 for it, only to be going back to my old vertical mouse within a week. I use my computer heavily, so I have given the "penguin" plenty of use, but I'm no closer to being comfortable with it than I was on day 1. Frankly, I believe listing this item as "High Precision" in the title is, at best, false advertising and, at worst, fraud. Until this product undergoes a major overhaul, I cannot possibly recommend it to anyone.

So I got that little bit older but still worked in an office and started to get pains from my wrist through most of my lower arm when using a normal mouse. I got the Penguin, easily picking the right size using the online chart, and the pains went away straight away: just not rotating the wrist was all I needed it seems. Good grip; easy to use three-button penguin-mouse; slides well on a mouse mat. I'm even switching back and forth between left and right hands - as I read somewhere you're supposed to - and the one penguin mouse allows you to do that well with the switch you can reach with your little finger. Great device.