ProtoArc EM01 NL Wireless Bluetooth Trackball Mouse, 2.4G Ergonomic Rechargeable Rollerball Mouse with 3 Adjustable DPI, 3 Device Connection for PC, Mac, Windows, Gray Roll

Good value for the money
I was planning to go for a genius trackballs, I was recommended this one by a friend and was definitely worth getting. I am using it every single day since I have purchased it.The battery life is very good.It is advertised with a light? I have never managed to make it work. Could do with a side horizontal scroll wheel as the vertical one.

NL means NO LIGHTS!
Whist I love this mouse, I am annoyed that I didn’t notice the NL in the model listing name & that it means this model does not have the RGB light ring!I was unaware they make a model without the lights!In the end, everything else is top draw, so I can live without the RGB

Nice trackball, but not perfect
I had high hopes for this trackball and when it arrived, I wasn’t dissappointed.The packaging, as one comes to expect with ProtoArc products, was robust with a well made exterior box. Once opened, contained within the box was the usual product, in this case the trackball mouse, an envelope containing warranty and quick reference/installation guide along with a peel off contact sticker to stick on the underside of the mouse, and a further box which contained the 2.4Ghz USB receiver, a more complex manual and a USB lead for charging.As specified within the items description, the trackball has 7 buttons and a mouse wheel, which I presume also acts as a middle mouse button. There’s the primary and secondary, back and forward, DPI plus and minus and the connection button which you click to switch between one of 3 connections; 2.4Ghz wireless, BT1 and BT2.Placing the mouse on a smotth table top, the mouse had a tendancy to slightly, very slightly slip such that every few minutes you needed to bring it back to where it started. This I’m sure would easily be solved by a cheap, rubber based mouse mat.The trackball moves smoothly and freely, perhaps a little too freely, but with the numerous DPI settings (5 if I recall, not 3 as it says in the description), more on this later, you can adjust the movement speed to your liking. Personally, I found a mid setting to be the most comfortable and manageable.The primary and secondary buttons are comfortable to click and you can actually “feel” them, rather than “hear” them with very little to no click sound. I’m not one for using back and forward buttons as I prefer the keyboard shortcuts so I can’t really comment on them except to say that they also had this definitive “feel” rather than “hear” scenario, although a little less perfected than the primary and secondary buttons.The mouse wheel, which I never tested for “middle mouse button compatability” is nice to the touch although I found it to be a little too far down the mouse (too close to the palm) to be comfortable to use in relation to the primary and secondary buttons. This maybe due to my hand shape, I don’t know, but I’m sure, once I’d been using it a while, I wouldn’t notice it.Now those pesky little DPI buttons, and I do mean little. The position of them is probablly about right but, as they are so small, with my chubby hands I had a job to feel whether I was clicking the plus or minus one. Sure, there is a light which flashes a set number of times each time you changed DPI setting, but this light, which also acts as a charging indicator which goes out when fully charged, is under the thumb so, unless you move your thumb and/or head, you can’t see which setting you’re on until the mouse goes shooting off in an arbitrary direction.Now comes the main reason for me only giving this trackball 3 stars. For one, I’m not a pushover so, unless everything is perfect and I can’t find any flaws with a product, you wouldn’t get 5 stars and on this occasion it falls short of 4.”Don’t keep us in suspense, what is the one thing that you’re not happy with?” I hear you ask. Well, maybe not, but the thing I have to draw your attention to is the… and we’ll be right back after these important messages from our… Whoops! That’s for commercials. No, seriously, the one thing I have to draw your attention to, and the only thing I don’t think I’ve covered, is the adjustable angle of the mouse. Firstly, when I read it I thought it was 0 to 20° but it’s not. You can set it at 0° or 20° but nothing in between. Apart from this there is no locking mechanism to lock it in place. Rather it relies on, from what I can see look like magnets and, although there is a definite feel to when you change the angle, the angle was being changed much more than I liked. I may be a little heavy handed, but without this locking mechanism, I found I was having to move it to the angle I found most comfortable, which, if I’m honest was 0° so there was no need for this at all for me.Remember, this review is based on my own utilitzation of the **ProtoArc EM01 NL Wireless Bluetooth Trackball Mouse** and your own experiences might be different.Would I recommend the product? That’s a difficult one to answer but I would probably say yes; unless you’re heavy handed with short and stubby (but not that short and stubby) hands. In this case, I would say you’d have to try it for yourself and see how you get on. As the saying goes, “One man’s onions is not necesarily the other man’s bird in the bush”.

Very good mouse
Very nice mouse. I had a Logitech before and the full button programmability and the dongle of that one was great, this one doesn’t have that, but instead its just built well and simply works. I use it on multiple devices and for more then 8h a day. Agronomic shape and good smooth thumb ball. No wrist pain or issues during work. For this price it’s a really decent tool.

Je cherchais une souris pour gérer mon setup: Un ordi de bureau et un ordi portable, sans encombré mon bureau avec des souris. De plus mon ordi portable est surtout utilisé pour faire des travaux annexes lorsque je travail sur mon ordi de bureau.Donc pouvoir jonglé avec la même souris sur les deux ordis en pressant simplement un bouton c’est parfait. Pour le coté ergonomique cela doit dépendre du setup (chaise, bureau souris); ayant investi dans les trois cela est plutôt confortable .Le bémol viens de la batterie, elle est fixe. Des piles rendraient l’appareil plus perenne.

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

This product hit all the numbers for me! I’ve been through countless different roller ball style devices. The manual says you can connect up to three separate computers, I only needed two so the third was a bonus. It connected easily and was plug & play for the most part. With the click of a button I can change between computers/monitors easily. The ergonomic adjustments on this make it very comfortable to use. Its the perfect size and the scrolling device / ball have just the right amount of resistance for easy use. I was skeptical when I purchased this device but its been a homerun for my usage. I charge it every few months… seems to do great with pretty heavy usage.