EM01 NL Ergonomic Wireless Trackball Mouse，No Arm Movement Needed

It's a big and good mouse. The build quality is very good but not as heavy-duty as a pro and expensive Mouse. but its well made and functions perfectly. a good buy

Coming from Logitech MX Master 3S and a first time Track Ball mouse user, this product is amazing. It takes some time to get used to but this feels great in the hand. The built quality is a tad bit less compared to MX Master but at least it doesn't have the rubber coating that MX master have that disintegrates over time. Very good value for money plus the amazon discount!

👍🏼

The scroll wheel has not been working properly (Laggy) fresh out of the box and it kept getting worse. Disappointed as this is not a cheap price for a mouse.

Good quality. Takes a while to get used to after using a “traditional” mouse. Glad that I made the change…

I was looking for a replacement for my Logitech mx ergo, which was having problems with the left button. I decided to save money and buy this device, which was a mistake. Everything looks great in the photo, until you touch the device with your hands. The plastic casing feels unpleasant to the touch. Over time, the surface naturally accumulates dirt, and then it feels better😆. But the big problem right now is that the middle button is malfunctioning. In general, if anyone is considering this device as a replacement for the mx ergo, it would be a mistake. I think I'll buy a Logitech again.

I scroll up it goes down first then up and down it goes up then down!

Doesn’t work after 2 weeks very bad product

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

I have been an MX Ergo user since 2018. I purchased this mouse as an alternative to the Ergo, due to a notable decline in their overall quality and the length of their service life. In previous years, the MX Ergo could be expected to last 1-2 years of near constant use before replacement, but over time, this figure has decreased to roughly 3-4 months. Given its high price point, the value proposition no longer makes sense. I stumbled on this product in my search for alternatives, and given its lower price point, I decided to take a chance. Below are my observations so far: 1. The build quality of the ProtoArc EM01 NL is outstanding. It is lightweight, it feels robust in your hand, and it is not coated in the same rubberized coating that inevitably decays with use and becomes sticky. 2. The outer dome on which you rest your palm is comfortable, and the vertical ridges on its surface help keep your hand from sliding from side to side. 3. The trackball itself is on par with the MX Ergo, despite being a bit lighter. The ball's rotation within the enclosure isn't as smooth as the Ergo, but it is acceptable nonetheless. 4. Having the ability to switch between DPI settings via physical buttons on the mouse itself is extremely useful. The fact that this can be done without installing additional software makes this feature even more useful. 5. The left and right click buttons are smooth and quiet, which offers a more "premium" feeling than the alternatives I've tried. 6. The scroll wheel functions in a consistent manner, without any jumps or similar annoyances. 7. The battery life has been great so far, and charging times are more than adequate. 8. The device can be charged through a USB-C port, which is a clear upgrade over micro USB, as it reduces the total amount of cables you need to have on hand. 9. The mouse can pair with up to 3 devices. Although a USB receiver is provided, I primarily use Bluetooth, and the experience has been flawless. I have had no issues with pairing across all devices and operating systems I've used it with. 10. The price simply can't be beat. For the price of one MX Ergo, you can purchase multiple EM01s, which are, in my opinion, a better quality product than the Ergo. Overall, I am delighted with this device. If you're looking for an alternative to the MX Ergo series, I would highly recommend you try this product instead. It is a high quality item, and the user experience is better in almost every way.

good product all exactly as described

Sehr leise, ergonomisch und präzise: Ich nutze die ProtoArc EM01 NL nun seit einiger Zeit und bin sehr zufrieden. Die Tasten haben ein angenehm dumpfes, fast geräuschloses Klickgeräusch, was besonders im Büro oder abends am Rechner sehr angenehm ist. Durch den verstellbaren Winkel liegt die Maus hervorragend in der Hand und ermöglicht eine entspannte, natürliche Haltung auch bei längerer Nutzung. Der Trackball arbeitet sehr präzise und lässt sich mit dem Daumen flüssig sowie exakt steuern, auch feinere Bewegungen gelingen problemlos. Die einstellbaren DPI-Stufen bieten zusätzliche Flexibilität und die Möglichkeit, per 2.4G USB oder Bluetooth zu verbinden, ist praktisch für mehrere Geräte. Insgesamt eine durchdachte, komfortable und hochwertige Trackball-Maus, die ich klar weiterempfehlen kann.