- Wireless Trackball Mouse, EM01 NL Ergonomic Bluetooth Rollerball Thumb Rechargeable Computer Laptop Mouse, Adjustable Angle & 3 Device Connection for PC, Mac, Windows-Gray Ball

A definite buy if you are looking for a trackball mouse. Build quality is pretty good and it feels effortless to use the mouse. Trackball movements/motions are very very smooth. Very smooth scroll wheel. Left/Right click buttons require perfect amount of very light pressure to work, therefore the fingers wouldn't get tired after continuous use and same for the forward/back button. Click sounds while using the mouse are very subtle and just loud enough for you to hear the action. The DPI levels (the cursor speed) buttons have 5 levels that are perfectly spaced for varied needs. Size of the mouse and curves/arcs on the mouse are well designed and thought of for ergonomics and comfort and not to forget the 20 degree angle plate at the bottom of the mouse allows you to change the angle of the mouse, is a big plus. It can connect to 3 devices and I had no issues connecting it via Bluetooth. Only drawback is there is no storage for USB receiver/dongle on the mouse and it has to be stored separately, I would recommend ProtoArc to improve on this aspect. Another suggestion would be to provide the ability to customize the back/forward buttons to actions that user prefers. I also own a Logitech trackball mouse but after using ProtoArc's effortless mouse, I am NOT going back to Logitech.

I have to say almost 6 days coming up on a year after buying this mouse, its perfect. Its funny cause when i bought this, i didn't really sift its specs thoroughly, didn't know physically moving the mouse didn't move the cursor, I just bought it because it looked good & it shipped fast. First off, the build quality is amazing, it feels and weighs very premium. love the fact that I can just recharge it with usb c. when I first got it, it took about 4 hours to get used to it because before it, the mouse i had was regular, so hand positioning was a bit awkward at first but after those hours i loved it. Never going back. Its very smooth and the scrolling is so good and easy to adjust. love that. One thing that's weird about it (or weird about me) is that u can use this while sitting in your chair (place it on the arms rest), standing up, on your lap, or laying down in your bed for tv (i use a projector). Its comfortable in every way. Although i said it took 4 hours to get used to, gaming took a bit longer, but over time it becomes way easier and honestly in my opinion, more convenient than a regular mouse. Reason why I say this is because for some people like me, our table may not have a lot of room to move the mouse, but with the rollerball, the ease of it is crazy. The battery lasts so long, I just charge it for the sake of seeing it charged, never for the sake of "its almost dead, or it died, lemme go charge it", if that makes sense. And the smooth connectivity is awesome, switches between devices like its nothing, the distance i can use it at is very good and I love the number-lights thing. Once you buy this mouse, you wont believe the quality you got for the price (compared to others). If the rollerball gets a bit slow or choppy, all I have to do is use my thumb and forcefully roll the ball until it feels smooth again, which i rarely have to do but its a quick fix, no extra steps. Overall, it feels awesome, performs awesome, and its aesthetic is awesome.

Great value for the price, it definitely competes with the Logi(tec) MX EGRO Plus, it has all the same or simmilar features (from what I have used it for) - same buttons, sensitivity button, scroll buttons, wrist angle adjustment plate, usb C connector/charging port, thumb movement is good and feels similar, and it has one improvement: you can connect it to 3 different devices (vs 2 w the logi). Trackball Tangent: This is a great trackball mouse for those who know they like them, and for those looking to try one, this is a good buy, if you have never used one, you should expect to spend a couple hours getting used to it, and probably a month to get fully comfortable. Benefit: If you use a laptop or tv for your computer needs, a track ball is great because you dont need a sturdy table, you can hold it on the couch or even your leg, thus allowing for mouse, or keyboard & mouse in far more situations/locations. Note: I paid $38.69, and it looks to be even cheaper ($29) at the moment, and I thought I got a great deal. Note 2: If they are close in price when you are shopping, get the purple or yellow/gold ball version, those have proper amounts of flair (I messed up and got the grey version :( )

I picked this up for a more ergonomic setup, and overall it’s been a solid mouse. The shape is comfortable for extended use, and the button layout feels natural without needing much adjustment. Tracking is smooth when everything is clean, and the connection has been consistent without dropouts. It’s responsive and works well for everyday tasks. My only real issue is the trackball itself. It’s very sensitive to even small amounts of dirt or debris, and when that happens, it can snag or feel inconsistent. That means you end up having to clean it more often than expected to keep it performing the way it should. Build quality feels decent, and everything else functions as expected. Overall, it’s a comfortable and functional mouse, but the sensitivity to debris can be a bit of a hassle over time.

Been using this for about a year and I'm happy with it. Tracks accurately, and the tilt allows for a natural wrist position, which is critical for extended use. The ball is easy to remove for cleaning (small hole in the bottom allows you to "poke" the ball out of the top, and cleaning it is straightforward. As with all trackball mice, you will need to keep it clean to operate smoothly. My only gripe is that where the button is for the different connection modes allows for accidental activation, so the mouse might suddenly stop responding because you hit the connection button. Easy to fix.

I purchased this unknown to me brand over the trusted Logitech for several options that appealed to me. Working from home, I wanted a mouse I could use with my work laptop and also use with my personal laptop without having to switch USB dongles from one to the other. This mouse works flawlessly for that. Another feature that appealed to me was the tilt option. After many years of the standard trac ball configuration, this looked like it may help wrist function. At first I was unsure, but I quickly adjusted to the upward setting and now it seems strange to go to the standard downward location setting for the trac ball. Up to this point I would leave a 5 star rating. The smoothness of the trac ball leaves a lot to be desired. Working with cad drawings. Part of my efficiency and speed depend on precision selection points on screen. Not sure how to explain the issue with the smoothness of the ball other than jittery. When trying to home in on the endpoint of a line or move the cursor to a different location in a text document it becomes jumpy/jittery when you get close to the place you need to be. As a result, this slows down productivity and or causes errors. Hence the three start rating. When comparing the physical characteristics of this one to my former Logitech M575, I notice the 575 has some protruding dimples above the rollers that the tracball sits on whereas the EM01 does not have these and therefor the tracball rests on the rollers. Maybe this is the issue that should be looked at by the manufacturer. I am debating now if I need to look for a new mouse after using this one for 4-1/2 months.

I never write reviews, but this trackball mouse deserves one. I have been using this style of mouse for about 25 years, you could say I'm a die hard fan. I have typically always stuck with the one big brand that makes them, not really wanting to experiment with other stuff. Inevitably every few years I end up needing to replace them from buttons starting to act wonky or other issues. This time the roller ball started feeling like it was sticking and no matter how much I cleaned it there was just no fixing it. A friend pointed this one out to me and so I thought I'd give it a shot. WOW! I am blown away! I have NEVER had a new roller ball mouse than rolled this smoothly, it truly feels almost frictionless. And this thing can move so fast you can't see the cursor or so slow it would take you a minute to get across the screen (perfect for fine detail work). Plus the left and right clickers are whisper quiet which is amazing. Also, set up could not have been easier. No software, no hassle, just plug in the dongle and go (I haven't tested the bluetooth yet). I am so glad I took a bit of a chance on this brand (it already had amazing reviews, so not a HUGE chance lol), the device is fantastic! Not sure about longevity yet, but my impressions are so good I don't even care! I am instantly in love!

running Linux Mint i had some initial issues with the usb dongle not connecting, but after trying a different usb port, it worked. first few times i tried it, i had some jumpiness with the mouse cursor moving several pixels at a time, but that seemed to resolve on its own after i tried it again the following day. the optical tracking seems fine, though it might be a tad jumpy if you're particularly sensitive to sensor accuracy. the ball is extremely smooth and developed no stiction in my few hours of usage. the buttons seem consistent and reliable and are fairly quiet with a pleasantly soft sound, but are too light for my tastes - i accidentally hit them sometimes when resting or moving my hand. also, the scroll wheel moves a little too easily and doesn't click hard enough, and sometimes after using it, it'll end up close enough to the next click that when i accidentally brush it, it'll do so and scroll a single line randomly. removal of the trackball is slightly annoying, as my previous trackball has a hole in the bottom that is big enough for my finger to fit through, but this one i needed to get a pencil to push the ball out. overall, i had to stop using it because the angle was simply wrong for my hand and setup; it feels like the buttons are trying to angle my fingers in one direction, the scroll wheel a different direction, and the contouring and ball yet another direction, leading to constantly feeling the edges of buttons or the mouse brushing against the sides of my fingers, and the shape was making me overextend my wrist uncomfortable.

avec clavier virtuel car arthrite +++++ aux mains

Nice stylish black trackball with (I choose) a red ball. Luckily no fancy LED lights, and connects to PC and MAC. Great!! What could be improved is a small storage area in the trackball for the dongle (wifi/bluetooth)

Best Logitech trackball yet. Easy to set-up & use on Win 10 & 11.

Best trackball mouse! I have used trackball mouse for a long time. Still using my corded Microsoft Trackball 1 that has long ceased production and with its surface faded badly. I have tried many name brands and no names searching for a replacement, preferably a cordless one. So many failed promises, handsome looking but non working and oddly designed nut jobs! ProtoArc EM01 is the one! I decided to write about it less than one month of usage, a first for me! For electronics, I tended to give it at least a three month break-in period. Here is why I think the EM01 is the best wireless trackball mouse: 1. True wireless! I hooked up to three devices wirelessly all at the same time! My Mac Pro, PC and MacBook Pro running both Mac and Parallels Linux. That is combination of Bluetooth and wireless 2.4. With the selection button on the mouse, the change over is seamless. The working range is fantastic. Also most importantly, under each device the operation is smooth and lag free no matter the OS and software. Clearly the EM01 did right about its software integration with multiple platforms. 2. Comfort! I was not sure about the angular side titling function at the beginning. I was wondering which hand doctor gave ProtoArc about the idea. I decided to give it a try. What a difference! At least for my normal hand, the mouse fatigue is gone! I am serious about this. I am on the computer daily for hours. Even with my beloved wired trackball mouse which is quite ergonomic, after a while the arc of my hand tended to tighten up. And after some time, you hand became tired. Not with the EM01! 3. Just the right amount of buttons and presets. A mouse should be simple! The scroll wheel on the EM01 is perfect! The other four preset buttons which two are customizable are functioning beautifully and at the right position. 4. Battery lasts forever! I did NOT charge the mouse when I first received it. Right away went into using it. The battery indicator has been on 100% the whole time. So the other day, for the sake of it, I plugged it in to charge. Within half an hour or less, I noticed the charging light had gone off indicating there is a charging protectionism in place. All positive! Highly recommended!

This is a brilliant mouse. The ball has a nice smooth glide action coupled with accurate pointer movements. It is very comfortable to use and the tilt action makes it even more comfortable. I thought it was a bit of a gimmick when I read it in the advert, but having used it for a month or three now, the tilted angle is the most comfortable way to use the mouse. The connectivity is good and you can still use the mouse whilst charging. So there shouldn't be any down time.