Logitech MX Ergo Wireless Trackball Mouse, Bluetooth Or 2.4GHz with Unifying USB-Receiver, Adjustable Trackball Angle, Precision Scroll-Wheel, 910-005179 - Black (Graphite)

EDIT2: and after 5 years... mx master came and fell apart after 2 years, a corsair sabre rgb lasted around 15 months before losing the wheel, other mice have come and go and this beast still holds up. The battery holds up. I will never be able to play a first person action game with it, but it is the best device for playing in the sofa, for carrying it to work, for so many things. If you are able to use a thumb trackball, there are very few things better than the mx ergo.EDIT: after 2 years using it, I am not sure if I can recommend it and I should lower the score. It is an expensive device after all. First: no, I still cannot get used to handle a trackball. Second: why something as simple as "move the wheel right or left to increase or decrease gradually the mouse speed" cannot be done, even on the software. Third: tired of cleaning the buttons, doing that every two weeks, and still they get a lot of dirt. The middle mouse button in particular is just nasty. Fourth: why only two devices for pairing up? Why? Still the positives are strong: portable as no mouse is, looks good, great for sofa point n click gaming. I just find it so difficult to use for office: you have the option of either make it slide across the screen with a tiny movement, or go to the slow precision mode, and that makes any drag and drop absolute hell. And it also replaced the pain in my wrist with pain in my thumb, and the way it is built I cannot switch to left hand. Very frustrating device.Logitech's thumb trackball makes company to my mx master, as I started having quite a bit of pain in my fingers and the combination of the two (and some other purchases) did a lot to ease that pain. Now: if this is your beginner's trackball it is going to take a while to get used to it, and I think it has not the best layout for buttons, as it would make sense to have direct access to a +/- pair of buttons for the speed of the mouse. But it is a nice mouse and it feels right. I don't really think the powerful magnet solution was necessary, the ball gets dirty very fast, but the battery is wonderful and it has that Logitech wonderful thing of having a dongle sharing a lot of Logitech devices.As a note, it only can alternate between two devices, unlike the Master that can alternate between 3. I don't know why it has that limitation.

For more than 2 years, I've bought ergonomic keyboards, a keyboard tray, adjustable desk and so on. All of these decisions are to maximize my comfort while working on my desk. At one point, I thought I turn to my attention to my mouse, as I was beginning to develop pain around my wrist.I tried ergonomic vertical mice and they were great for awhile but found them to be just as bad as I would overstretch my wrist when navigated the cursor to the left. Then tried the Kensington trackball devices; I like the precision of having large trackballs but I couldn't adapt to the click buttons due to their locations. Then I tried Logtech M570 and it was promising but I eventually settled on the more premium MX Ergo.I bought this product in Dec 2017, so after 10 MONTHS of use here is my review.Really Comfortable : The M570 and MX Ergo feels more like traditional mice as my hand would settle the same way as before. The MX Ergo is far more comfortable because of its tilt angle. At 20 degrees, my wrist is far more relaxed compared to the M570's flat, horizontal feel.Premium Feel : The MX Ergo is heavy so it feels like a premium product. Due to its weight, it hardly moves on my desk. But much of that weight is on the magnetic base plate, so when I remove it the product is as light as a low priced mice so it loses much of its premium feel. I like its matte finish but as expected the left click button has become shiny after repetitive use.Connectivity : As per usual with Logitech, it is supplied with a multi-device unifying dongle and can connect to 2 dongles (note: it only comes with one). This is very useful as I use one dongle at work and another at home. I wish there are more connections as I sometimes connect it to my laptop's bluetooth - to do so, I have had to re-pair it. I also wish it had a storage holster for the dongle - cheaper products have one.Cursor Navigation is Great : It took a bit of time to adapt to the MX Ergo - but not too long. For one thing, I have had to develop a aim when I move the cursor with my thumb rather than my wrist. I also had to coordinate my thumb's ball control with my index finger's click press lifting my thumb away from the ball before I click so that the cursor doesn't move (thumb-lift-finger-click). But I found moving the cursor with the trackball far more comfortable than flexing my wrists. And because the trackball device stays where it is, I don't over extend my wrist. Furthermore, moving the cursor from one end of the screen to the another is one or two flicks of the thumb, rather than two wrist strokes with a mouse (or worst, over extending the wrist) - this is such a comfort when working with large screens.Cleaning my balls :) Unlike modern mouse where it uses optical or laser sensors, the downside with having a ball is that from time to time it needs maintenance. The trackball picks up skin oil from my thumb and at times I have had to wash & polish the ball and clean the insides of the device. It certainly harks back to the days when I've had to clean my mouse ball on a regular basis; the good news is not as bad as that! I've had the MX Ergo for 10 months, and I've clean the ball 3 times. That not due to any functional failure; I cleaned it because i noticed that I lost some of the ball's smooth running.Charged for long time: I use my MX Ergo daily and I haven't had to charge it on a regular basis. I've only ran out of juice once after not charging it for a 3 months after having a new job.I miss my mouse (sometimes) : Because I use mice for decades, my cursor aim is better with them then a trackball. This became obvious when I started drawing a flow chart; my thumb was fatiguing when drawing and aligning shapes. Thumb-lift-finger-click coordination is not necessary with mice.

Pros- actually ergonomic feel (surprise surprise)- once you get used to it, just like using a regular mouse, just without the extra wrist movement- pairing is quite easy and simple- managed to get it to work with windows and in Linux (though be aware you cannot use the Logitech software in Linux, this is windows or Mac only I believe)- being able to adjust the plane can be quite handy at times too- dark color keeps it looking cleaner for longer lol- ball is easy to pop out and clean if need beCons- no Bluetooth dongle like it’s cheaper ergo brother (like why?? So annoying, defo space for it) so you can only pair up 2 devices , which for me personally is annoying as I use quite a few, was hoping for a bt dongle as I bought the cheaper version for my partner and the dongle has come in handy a lot.- For you to take advantage of the features of the mouse (shows you in the app) you need logitechs silly proprietary app. This means I can’t use these features of the mouse on the work laptop as we can’t download apps etc., so very annoying as I had bought it to be able to use with my work laptop as well as my personal laptop.- oh and the dongle that does come with the mouse can ONLY be used in conjunction with the app -_-… so basically pointless if you want to be able to use it on a locked down work laptopRegardless of the cons if you are using it solely for personal use it’ll be a great mouse if it fits your ergonomic needs