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

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.

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.

TL;DR: 4 Stars. A best-in-class ergonomic chassis with high-utility 0–20° tilt mechanics. However, the high-maintenance Zirconia bearings require frequent cleaning (the "nose oil" trick) to combat rapid dust accumulation. Resulting in potential for a superior ergonomic experience that demands consistent mechanical upkeep to maintain smoothness. [MECHANICAL SPECS & PERFORMANCE] Connectivity: Triple-Channel (1x 2.4G USB Wireless + 2x Bluetooth 5.0). Bearing Mechanics: 34mm resin trackball resting on three Zirconia ceramic bearing balls. Ergonomics: Adjustable 0–20° metal hinge allowing for a natural "handshake" grip. Battery: 900mAh Li-Po (Type-C) providing up to 90 days of operational uptime. Triggers: Silent-click primary switches for low-profile acoustic signature. [FUNCTIONAL UTILITY] The Ergonomic Hinge: This is the primary ROI. For a 20-year WFH professional, the 20° tilt is a mandatory requirement to prevent repetitive strain and maintain posture. The "Nose Oil" Protocol: A known community fix for Zirconia bearings. Using facial oils provides a temporary low-friction coating that improves trackball "glide" and prevents sticking. Device Switching: Seamless integration between three workstations via the top-mounted selector. DPI adjustment is also handled topside. [CRITICAL NON-CONFORMANCE: HIGH MAINTENANCE] Dust Accumulation: Under current environmental conditions, the rollers accumulate "gunk" within days. This is a common failure point for budget Zirconia setups where the bearing tolerances are tight. bearing Modification Potential: The unit would benefit from a "Bunker Mod"—upgrading the factory Zirconia to G5 or G10 grade Silicon Nitride (Si3N4) bearings and a dry lubricant like PTFE or Molybdenum Disulfide. Avoid graphite lube, as it is electrically conductive and can migrate into the optical sensor, causing "skipping." [AUDITOR’S SUMMARY] The ProtoArc EM01 NL is an excellent ergonomic tool that requires an active "maintenance schedule." If you are prepared to pop the ball and wipe the rollers twice a week, it is unbeatable at this price point. Highly Recommended for stationary setups, provided the user is ready for the upkeep.

I love this trackball. I originally had a Logitech, which stopped making these kinds of trackballs. So I bought this to replace it, and I love it more than the Logitech, and it was about a third of the price. It has more features and has not failed me yet. It's comfortable; the ergonomics of it are great, especially the tilt. The scroll wheel is still going great and has multiple functions. The size is perfect. It is easy to use with plug-and-play. The material is great, especially the metal magnetic plate it tilts on. I also LOVE the purple trackball! I'd like it to work via Bluetooth or while plugged in. The Bluetooth on my laptop stopped working, so I would have liked to use this just with the wire. But other than that, this is the best trackball I have had. I would get it again, but it is still running strong!

Owned this for 10 months now, so I figure a review is in order. I’ve found this to be a decent trackball mouse with the button “feel” and reliability as a significant detractor. Easily cleaned by popping the ball out from the bottom. Bluetooth easily connects to my Mac and PC, but used primarily on Mac, so that's what this review is based on. I have compared this track ball to my other mice, a Nulea M501 and Logitech 570, which are both in daily use, too. Like others, this trackball mouse can switch between 3 different devices (1 USB using the included dongle, and 2 Bluetooth (BT) devices). Low power use, and I only have to charge it monthly. Since Mac is great about displaying the charge level of attached BT accessories, it’s pretty easy to know when to plug it in, so I don’t need a charge light. Side-mounted DPI-adjust buttons are great for fine-detail cursor movement (such as in Figma or Illustrator), as you can adjust on the fly. The left and right mouse buttons are NOT as solid as my Logi or Nulea trackball mice, and I’m one of many who complain of this and find it unacceptable. Some shortcomings: - As others have mentioned, the left & right mouse click buttons have a super-mushy feel for such a “premium” product designed by Nguyen, who introduces himself via a paper insert in the high-quality packaging. If only they’d put as much time into engineering solid buttons as their packaging, I wouldn’t have taken TWO stars off. - Hit-or-miss on longevity based on other reviews Big Wins: - Clever design, appreciate the ergonomic adjustments - Different ball color options (I have the gray one) - Easily-switched between BT/USB dongle devices using top-located button - Affordable (when using the regularly-available coupon), and does what my 570 does at a fraction of the cost

This felt weird when I first used it. My hand kept trying to move the mouse itself instead of the track ball. After an hour of using it, it felt more natural, and I began to like it. I still would instinctively try to move the entire mouse on occasion. Now that I have been using it for a few weeks, I really like it and am not sure if I would want to go back to the standard wireless mouse. I would recommend that persons try it and not dismiss it as a gimmick. Good quality mouse and very little stress on the wrist if that is important to you.

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.

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Ho acquistato questo mouse come alternativa al Logitech Ergo che utilizzo ormai da molti anni. Dopo 3-4 mesi di utilizzo, sono totalmente soddisfatto. Se avete già usato Logitech Ergo, ecco alcune differenze e punti notevoli. a) la base è di plastica (anziché metallica) e si può regolare su due posizioni, quindi risulta più leggero, ma stabile b) il fondo della base è antiscivolo, discreta aderenza c) può essere collegato a 3 diversi apparati via Bluetooth, si cambia rapidamente col bottone selettore, molto comodo d) l'inclinazione della base è minore rispetto ad Ergo, ma ancora comfortevole e) la precisione del puntatore è più che soddisfacente f) si ricarica tramite USB-C, ci vogliono alcune ore - quando è in carica c'è un led rosso acceso, che si spegne a carica completa. Dato il costo significativamente minore, direi che è un ottima alternativa al prodotto Logitech

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.

Such a game changer for working on my laptop at a small desk! I use this for my online assessments, Word, excel worksheets and it is nice not to have to move my hand all over the mouse pad. Easy with games that don't involve heavy combat and perfect for Baldur's Gate 3 and other turn based fighting. Two months and its still my favourite mouse.

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)