ProtoArc EM01 NL Wireless Trackball Mouse, Rechargeable Thumb Control, Gold

Been using traditional mice for years and the wrist fatigue that comes with extended desk sessions finally pushed me to make the trackball switch. The ProtoArc EM01 NL is the right entry point into thumb trackballs — ergonomic design, wireless Bluetooth, rechargeable, and multi-device connectivity that makes it the ideal work from home peripheral. The three device connectivity is the feature that separates this from a standard wireless mouse. Two Bluetooth device pairings plus a USB dongle receiver means you can have a work laptop, personal machine, and a third device all paired simultaneously and switch between them with a button press. For a work from home setup where you're bouncing between a company laptop and a personal machine throughout the day this is a complete workflow changer — one mouse, no re-pairing, instant switching. The thumb trackball placement is the ergonomic win that makes this style of mouse worth switching to. Wrist stays stationary while the thumb does the tracking work — after a few days of adjustment the precision is there and the wrist fatigue from constant mouse movement is completely gone. For anyone doing long desk sessions whether work or home lab, the difference is real and noticeable. Bluetooth connectivity is solid and stable across all paired devices — no lag, no dropout, no cursor jumping. Pairs quickly on initial setup and reconnects immediately when switching between devices without the delay that plagues some wireless peripherals. Rechargeable battery life is strong enough that charging is an occasional task rather than a constant concern. USB-C charging means one less proprietary cable to manage. For anyone working from home across multiple machines, the three device pairing plus trackball ergonomics makes this an easy recommendation. Highly recommended.

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.

I only write reviews when something exceeds or falls way below expectations. I have been using the Logitech thumb ball since the late 90s. I've gone through probably ten of them in that time - obviously a fan. I have been using what is now called the Logitech Ergo M575. The ProtoArc (so far) will permanently replace it. For less money, this feels like a superior product. The action from the ball is super smooth and the feel is premium under the skin. More options for connection (bluetooth and usb chip), two options for positioning, USB-C charging instead of making sure I have AA batteries. I can't speak to the durability as I've only just begun using it but thus far, this product blows my previous mouse out of the water.

This thing is so close to being a proper competitor to the MX Ergo mouse by Logitech however, it feels a little cheap and the placement of controls is off slightly. I have yet to put it through its paces so this review may change over time. So far, the bad is not so bad and the good is good. For the price (~1/3 the cost of the MX Ergo by Logitech), it's a good way to get on the trackball bandwagon. Trackball mice alleviate carpal tunnel syndrome, 100%. If you like this unit, step up to the MX Ergo for some things to be better or different. This is going to be my go-to mouse until it pisses me off and I switch back to my MX Ergo. Overall, your experience with this is no worse than getting used to a new keyboard. First impressions: Bad: The buttons are designed too high by just a few millimeters. Using it will allow for my hand to adjust so not really a big deal but it's worth mentioning. Not necessarily a flaw, just different than what I'm used to. The right mouse is too easily clicked. Again, I'll likely adjust to this. The plastic housing is noticeably sharp (not like a razor or anything that could harm someone) on its edges: it needs rounding on the edges instead of just buffing out the connection points from manufacturing. The body plastic, where your palm rests, is not rubberized like the MX Ergo by Logitech (which this is an obvious competitor to) so your hand kind-of slides on it. Again, I'll adjust to this. The scroll wheel has noticeable notches while scrolling. The scroll wheel may or may not be left/right clickable: I can't tell if it's a feature or a defect. Good: The ball rolls rather nicely. Bluetooth connectivity is smooth. I haven't tried the dongle yet. It has soft-click which is really nice. It has a range of dpi choices instead of the single-click that the MX Ergo has. Time will tell: How often do you need to clean it? How long does a charge last? The bottom plate cannot be removed but is adjustable. Does removability even matter? There may be additional features which I have yet to discover. I may update this review in the future.

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 purchased this product with great expectation of replacing my Logitech ERGO Trackball due to the soft touch rubber falling apart after 4 years of use... and at the price this was going for back in September 2025, it checked all the boxes at the time. I dig the subtle gray color and the ball is smooth to the glide. Accuracy was on point and being able to switch DPI settings did wonders when I needed fine pixel tuning for graphics... the ability to use the trackball at a tilt was a joy to use... super easy on the wrist. It totally lived up to my internal hype and expectations... but fast forward to March 2026, I started noticing that the scroll wheel started acting sporadically. hopping scroll distances and smooth scrolling is completely nonfunctional. I review documents and scroll A LOT - sometime to traverse pages, sometimes to zoom... this EM01 can no longer perform these normal tasks and is nearly useless. I really did enjoy everything about this up until the scroll wheel started malfunctioning leaving me frustrated every time I used it. The replacement is a Nulea Trackball with the tilt stand because I like that angling option so much better than the Logi trackball 575S (which I also own)

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!

I have been using this for quite a while now. I got this to replace a different trackball that just didn't stand up to daily use. One thing I'm really impressed with is the overall quality of the trackball, especially how long it goes on a single charge. Typically, I've gone a month or more between charges and I use my computer 4 to 9 hours a day. Connection to the Linux computer running Kubuntu 24.04 LTS was plug and play. No configuring required. The ball is nice and smooth, the trackball fully fills my hand resting comfortably on it, the buttons are light and well-positioned, and the scroll wheel is nice and smooth. The scroll wheel also works well as the middle button. It works well with all my work programs such as Blender, KDEnlive, Dolphin, and the very few games I have. I believe this is going to last a good long time, is well worth the price, and definitely can recommend this product for anyone who likes a thumb oriented trackball.

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I've been using this daily now for almost a year and I find it much more comfortable to use and easier on the wrist than a regular mouse. I bought it to try because I was feeling strain from clicking and holding the middle mouse button whilst also moving the mouse which you have to do a fair bit in Blender and other 3D software. This type of mouse solved my problem as I'm no longer fighting my own grip. It's also a space saver as you no longer need to move the mouse around the desk. This is my first trackball mouse but I quickly adapted and within a couple of days I was just as accurate at moving the ball as I was pointing with a regular mouse. I don't have much to compare to but the build quality feels solid. I've not had any connectivity issues or issues with glide or smoothness, and it works well switching between different devices. The battery lasts a few months between charges and you can use it while charging too. The buttons are all nice to click in both orientations (flat or tilted) and the sensitivity is just set once and forget. You do have to pop the ball out to remove dust occasionally but it appears that's just expected maintenance with this kind of mouse. There's a handy hole you can push something through to help with popping it out. I'm really happy with this purchase and it has become part of my every day setup. I'm not sure how it weighs up against more expensive models but I'm happy enough and not looking to upgrade any time soon.

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)

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Es un mouse de trackball de muy buena calidad. Yo estaba usando el Logi ERGO M575 por casi 5 años, pero empezó a dar problemas con sensibilidad de los botones, mala recepcion y se empezó a pelar la parte donde se apoya la muñeca. Desgaste normal. Cuando busque el reemplazo, me decidi por este ProtoArc, principalmente por precio. En casi todo lo demas son muy parecidos. PROS: es de buena calidad. Se puede conectar por 4G USB (adaptador incluido) o por Bluetooth. Botones silenciosos. Puede conectarse a 3 dispositivos. Se siente muy similar al Logi ERGO, si es que lo venian ya usando. Puede configurarse a distintos DPI, por lo que no solo funciona para trabajo, sino que puede dar batalla en juegos tambien. Se puede angular a 0º o 20º para mas ergonomia. La carga es via USB 3.0, que practicamente es ya un estandar para todo. El empaque es como de producto premium... no importa mucho, pero desde ahi se ve calidad. Diseño: se ve bien y no se siente "barato". En general, es un muy buen trackball. CONTRAS: la base no es removible fácil como la del Logi ERGO, eso podria ser un problema a la hora de limpiarlo. Los botones no son configurables mas allá de lo que permita Windows (o el sistema operativo que usen)... gran diferencia del Logi ERGO que permitia incluso perfiles de botones por aplicacion. En general es muy buena alternativa al Logi ERGO a un precio mas bajo, salvo que busquen configurar botones de una manera muy particular para distintas aplicaciones. YO si lo recomiendo bastante por la relacion calidad/funcion/precio