ProtoArc Vertical Wireless Trackball Mouse, EM05 NL Bluetooth Ergonomic Rollerball Mouse Rechargeable Computer Laptop Thumb Mouse, 3 Device Connection

Used Apple mouse and started having pain in hand so got this. Learning curve is not that steep and comfortable.

Best mouse I've had so far, used to own a Logitech ergo m575 which was good for short bursts of usage but for longer workdays I felt pain in my palm and the joints of my fingers, did a bit of research and decided to try a mouse with a more neutral handshake position and it's the best decision I've ever made, pain is gone! Also high quality build, smooth scrolling, great feel, all around quality product

Basic description: essentially the trackball equivalent of the "vertical mouse." What do I think about it: Excellent. Ergonomic design is fantastic for me. Helps my shoulder vs. other trackballs because the angle of the arm impacts which muscles in the shoulder get used. It's just a comfortable, natural angle that allows my arm to be more relaxed while having good control of the cursor. This is also a much better value than the extra ergonomic Logi[tech] equivalent, which is nearly 2x the cost as I type this. And by the way, you'd have to use the cushion thing the Logi unit comes with to achieve a similar angle. Maybe it's great/fine, but if you want the steeper angle then why have a 2-piece design? Other aspects: Buttons somehow feel crisp while also being quiet. Effort feels just right to me. Weighting of the ball feels just right and it moves very smoothly. Scroll wheel could feel a tad tighter for my liking but this is being very picky; it behaves as I expect/want. Subjectively, the ProtoArc feels higher quality than the Logi M575 I'm coming from. The M575 doesn't feel cheap to me, but this feels nicer/higher end. If you like switching between DPI levels on the fly, there's a button on the mouse for this. I don't use this but the button is not in the way. My only open questions about this unit is how the Li-ion battery and buttons will hold up. The Logi units use plain old AA batteries, which makes them a non-issue to replace (though less convenient than Li-ion in some ways). The buttons fail on Logi units faster than I think they should. Time will tell here but I'm hopeful given that ProtoArc put the time and effort into creating a very thoughtful product.

Loving this Mouse, all as specified, funny and wired when u start using it, but it gets better.

Mouse muy recomendable, especialmente si tienes muy poco espacio para moverlo. La bola responde muy bien y hay que tomar tiempo y práctica para usarlo. El ajuste del dpi te ayuda bastante para moverlo con más control.

To preface, this is not my first Protoarc product. I've also used their EM03 trackball, but that one is a finger ball (the trackball is located up front instead of on the side) and not angled, which doesn't help with my wrist pronation and carpal tunnel issues. Enter the EM05. Very solidly built mouse but doesn't have a lot of weight to it, so some people might not like that it doesn't have that "grounded" sort of feeling. Otherwise it punches above its weight I find - easy to connect to any device via usb-c, 2.4ghz usb dongle or bluetooth wirelessly. The trackball rolls smoothly and is very easy to pop out and clean, but the ball won't just drop out of its slot. The metal scroll wheel feels okay but still lacking compared to the industry standard in the Logitech infinite scroll wheel in terms of smoothness and tactility. I also like that it has this sort of extended "lip" at the bottom to cradle the edge of your hand as you cradle it around the mouse. The angle on the EM05 is very comfortable compared to other vertical trackballs I've tried prior like the MX Ergo. I personally prefer the steeper angle so I can get my wrist as vertical as possible to avoid the overpronation but obviously not everyone will like this. For any left-handers wondering, this mouse is unfortunately not going to be for you with the buttons all located specifically for right-handers. Hopefully Protoarc produces a left-handed version of this in the future for the lefties out there.

Mi punto de vista del.producto es excelente