EM01 NL Wireless Trackball Mouse, Rechargeable Thumb Control, Red | 0/20° Adjustable Angle to Reduce Fatigue, Triple-Device Bluetooth & 2.4G USB-A for Office Use, Silent Click, Easy to Clean

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 :( )

This brand is getting some hype for being value priced competition without being garbage. I'll agree with that. At work I use a Logitech MX Ergo that I've had for at least 7 years. I've had zero issues with it and it has been extremely reliable. It was also $75 when I bought it. I wanted one for home too and found this ProtoArc for half the price and some good reviews. Here's how the ProtoArc compares (and I'll use my MX Ergo as a comparison tool). The overall size and shape is very comparable to the Logitech. It's a bit different, of course, but it's an easy transition from one to the other. Both are excellent for ergonomics. Buttons on the ProtoArc are just fine. They're quiet and work well. Both it and the MX Ergo have different features. The Ergo has a customizable thumb button (default is 'precision mode') and a horizontal tilt/scroll feature on the wheel. Makes navigating spreadsheets and graphic arts documents really easy. The ProtoArc doesn't have either of those, but it does have two buttons in the thumb position that control sensitivity (so you still have a "precision mode" technically), and there is no tilt wheel for horizontal scrolling. Both have buttons right below the wheel to change input mode, and both have two small buttons to the left of the main left button. These are set on the ProtoArc for I believe forward and back (not at home so I can't verify), while all of the buttons on the MX Ergo are customizable with Logitech software. The ball on both mice are good and similar in size. The bearings on the Logitech are just better, the ProtoArc isn't as smooth, but it's not bad either. You can use the MX Ergo while charging, and if you use the Logitech software, you can get pop-ups notifying when the battery is low. The ProtoArc just dies and quits working, and will not work again until the battery reaches a certain charge level; I have never got it work with a cable immediately after it dies. The batteries on both mice are extremely long lasting. So...should you buy one? If you have never used a trackball and are interested...this is a great entry point to try one out, and it's a good product on top of that. It feels solid under the hand, and has had zero issues. I wouldn't trade my MX Ergo for it, but my MX died and someone gifted me a ProtoArc as a replacement...I'd rock it.

Great mouse! The package is simple, yet elegant. Heavy, fits my hand (not so big), ergonomic and easy to use. movement was not so smooth at the beginning but after a few days it moves normal like other brands. I found the levels of sensitivity too "aggressive" in high settings, it makes the pointer too erratic and it's useless to me (the high sensitivity) like in other trackball mouses I had. The intermediate sensitivity and the lower ones are great, and easy to switch on the go. I do not use it in bluetooth mode, only wireless mode for stability. The connectivity in wireless mode is great 95% of the time, but I have 3 other wireless dongles connected side by side, each in a dedicated USB cable extension to put the dongles in direct line of sight to my desk and they sometimes interfeer with one another causing a little jitter but it's normal for me (I'm already familiar with the issue from other wireless devices and other mouses I swap regularly for different tasks). if you want a stationary mouse to use as you browse, read and work, this is the one (of course it's not designed for gaming or quick, precise movements and actions with the pointer; use a regular mouse if you want to game).

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!

Overall, the quality is good. The trackball is responsive and the build quality seems solid. Battery life is outstanding, the device lasts for weeks at a time. The device is comfortable to use, as well. I have average-sized hands and it fits me perfectly. My primary issue is that the scroll wheel started to malfunction after about a month. I can scroll down and it will randomly scroll back up or sometimes will fail to scroll at all, even with me rotating the wheel. Unfortunately, that issue takes my score down, as I use my scroll wheel quite a bit. Hopefully the manufacturer will fix this, because it's otherwise a very nice device.

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.

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.

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

I bought this to replace my Logi Mx Ergo as it was suffering from the dreaded left click fault.. I can honestly say this is a worthy replacement at less than half the cost. truly brilliant Trackball mouse, every ergonomic in fact it feels just like the Logi MX Erco it replaced .. 5 Stars all round and highly recommended