LogitechM575 Ergonomic Wireless Trackball USB Mouse, Black (910-005869)

I owned the previous model of this wireless trackball mouse and have owned 3 Logitech mice so far, so I decided to upgrade to the latest version—and Logitech has done it again with another fantastic product! The improvements are noticeable, from the refined design to the seamless wireless connectivity and lack of any latency issue's. It offers incredible value for the price, combining top-notch quality with flawless performance.The precision and smooth tracking make it perfect for both work and everyday use, and the ergonomic design ensures hours of comfort. Setup was quick and effortless, and the battery life is as reliable as ever. If you’re looking for a quality trackball mouse, I can’t recommend this one enough!

So I've been using Logitech thumb-based trackballs since they were rectangular and connected with a DE-9 serial connection. I swear by them and have converted many others.The advantages are clear: you don't need huge swaths of desk space to move them around, you can remove your thumb from the ball so you don't inadvertently move the cursor when you click, and the interface is extremely intuitive and easy to use. The biggest disadvantage is that they are solely right-handed -- my two lefty kids can't use them. The kids also say they're not great for gaming so that might be a factor; my youngest uses some specialty mouse designed specifically for gaming.As for this particular model, it's not terribly different from the previous M570. Note: in the pictures, the new M575 has the more silver ball; the one with the more blue ball is an M570.The forward/backward buttons (between the left mouse button and the trackball) are less prominent on the newer model and include indentations that appear to be simple circles. I'm guessing that the circles are meant to give your finger a reference point to be able to click without looking but I find them more annoying than useful (they feel like there's a piece of dirt or something stuck to them) and the prominent buttons of the M570 were easier to feel, as well as being less susceptible to accidental clicks.The palmrest part of new M575 as some subtle ribbing, probably meant to keep your hand from slipping from side to side but it's honestly just another annoyance. Not enough to prevent me from using it but given the choice, I would prefer it without.The activity light/battery warning light has moved from just behind the forward/back buttons to the middle behind the main mouse buttons. Not a problem at all, just different. I will note that the light on the M570 can be seen even when your hand is on the trackball whereas this one is covered up by your hand.The trackball itself is fine; I think I like the old blue color better but there doesn't seem to be any other difference.The bottom of the trackball is not functionally different from the old version and it's good to see that the slot is still there in the battery compartment to hold the receiver. The power switch is a little smaller and harder to access but still perfectly functional. There is a new button that appears to switch the trackball from using the receiver to using bluetooth -- a handy feature if you want to use it with something like a tablet, I suppose. (I've not tried it via bluetooth.)If you're thinking about upgrading from an older M570, you'll feel right at home, for the most part, but I don't think there's any compelling reason to rush right out and get one. I bought a new one because the scroll wheel on my old one stopped working reliably. Had it not, I'd still be using the M570. (Note: I still use an M570 in my office, as does my wife.)If you're new to this style of trackball, imagine laying your hand on a gently curved rest and moving your thumb around. It's comfortable and less stressful than a traditional mouse and it requires a lot less free desk space. It doesn't need any particular type of surface; I've used it with it on my leg, on the bus seat next to me, and on my bed.It's not the cheapest device in the world but if you're hesitant to spend $50 on a trackball, you're probably not a heavy or serious user. Gamers will probably look elsewhere and possibly even pay more; casual users will be looking for something in the $15-25 range. I'm in front of a computer 8-12 hours per day and I don't mind spending a bit on something to make that experience more efficient and more comfortable. If you want to try a trackball without spending as much, there are some decent knock-offs on Amazon that should be fine. But if you don't mind investing in something like this, it's well worth it.

Yes, there is a bit of a learning curve, but the ergonomic mouse is superior is almost every way! I never realized how much more superior until I noticed my arm/wrist strain pretty much disappear from not having to move it around to move the mouse cursor. You can use the mouse on ANY surface which is great for laptop users who like to work from their bed or on the couch. Heck, you can even hold and use the mouse in the air lol. The mouse also has two buttons (three if you include pressing on the mouse wheel) that you can program to do practically any shortcut function with the Logi Options app that you install on the computer.The battery life is pretty good. I use my mouse very often and only had to change the battery once in about 18 months. You can also flip the off switch on the back of the mouse when not in use if conserving battery is still a concern.Don't forget to clean the trackball receptacle regularly, it collects dust which when combined with the natural oils from your skin can turn into gunk which will make the trackball not move as smoothly. Cleaning is a breeze: simply poke the trackball out from the little hole underneath and use a clean cloth/tissue to brush away the dirt.This is actually my second Ergo, I keep one at home and carry one in my work bag to bring with me to use at the office because my workplace computers are still in the "Dark Ages" with their wired traditional mice. It doesn't even feel right using those anymore lol. I am now saving to upgrade to the MX Ego S, but the 575 is still a good value for introduction to trackball mice.

As someone who spends hours working at a desk or gaming, finding the right mouse can make all the difference, and the Logitech mouse has truly raised the bar in both performance and comfort. From the moment I opened it, I could feel the attention to detail. The contours of the mouse fit my hand perfectly, reducing strain during long hours of use. The mouse's smooth surface and solid grip provide a comfortable, fatigue-free experience, especially considering that it requires no more mouse movement. The precision of the Logitech mouse is top-notch; every movement is fluid and accurate. It's especially noticeable when performing detailed tasks like photo editing or executing quick movements in fast-paced games. The responsiveness is simply unmatched. Battery life is impressive too—if you opt for a wireless model. I rarely have to worry about charging, and when I do, the process is quick and efficient. In terms of value for money, the Logitech mouse strikes the perfect balance of quality and affordability. It’s durable, reliable, and performs at a high level across all tasks.