ProtoArc Wireless Trackball Mouse, EM01 NL Ergonomic Bluetooth Rollerball Thumb Rechargeable Computer Laptop Mouse, Adjustable Angle & 3 Device Connection for PC, Mac, Windows-Gray BallClimatePartner certified

Incredible Battery Life and ErgonomicsI always like to give a product at least three months of consistent use before writing a review, so I can speak to its long-term performance. After using this ProtoArc trackball daily, I can say it's a fantastic piece of equipment, especially for anyone juggling multiple computers. The ergonomic design and adjustable angle have been a lifesaver for my wrist during long work sessions.Functionally, this mouse has been a reliable powerhouse. The trackball is smooth, the connection is flawless, and switching between my devices is seamless. But the battery life is what truly blows me away. In the entire three months I've been using it, I have only had to charge it once.My long-term experience has been overwhelmingly positive. If you want a comfortable, reliable mouse with a battery that lasts forever and streamlines a multi-device workflow, this is an excellent investment.

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.

It's a very good mouse for the price. Doesn't feel cheap, has nice heft to it. Has lots of features. I like the fact that you can plug it in to charge and use it at the same time.I've been using trackball mice for decades, off and on, at first they do take some getting used to and often a good amount of time to adjust sensitivity to get it just the way you want it. This one out of the box worked almost just right for me. I just checked the ProtoArch website and there are no drivers or setup options to install. Sensitivity settings are on the mouse itself using the DIP buttons to the right of the ball. This is both a blessing and a curse. Not needing to install software is great, it just works right out of the box (as long as you turn it on before you install the dongle into your computer). It's simple. But then I'm a techie, and I like options that are not normally available thru the basic device options on my computer. Just like this company I need to realize that simple is better, lol.The ball moves effortlessly, zero resistance - is too free flowing a thing? (it's still clean, this will probably change in a couple of weeks or so to let me know it's time to clean the bearings - common for trackball mouse users and eating lunch at the desk at work). The right mouse button seems too easy to hit accidentally in both modes (flat or tilt), not sure if it's because my finger likes to rest at that spot or the button sensitivity. I suppose my proclivity to hit that will likely change over time and use. The scroll wheel is a bit clunky, stiff and not as flowing with gentle ribbing like the Logitech mice I have used, even the older M570. The logi mice wheels are nice and quiet. While this one isn't terribly loud, it's definitely not a Logi. Initially when I bought this mouse I was sure I'd want to keep it tilted to the right and was going to try to figure out a way to make the tilt permanent. Now I kinda like being able to tilt it at will, depending on my hand's mood (remember I like options).Overall the mouse is worth the price! Has some great positives (simultaneous use/charge, free ballin', heft/quality feel, hand comfort, options). The negatives are my own subjectiveness (which I note after reading others comments, I'm not alone). The sensitive right click, the wheel's shortcomings and limited customization, I suspect I will get over in my own time

I use this for work and with a laptop, and the button to swap to other devices is super convenient. It has a comfortable grip, and the adjustment from flat to angled is nice.I've even used it for some casual gaming and found it comfortable and completely usable even in first person games. Great battery life even when left on.Choice of Bluetooth and the dongle is useful, and means I can use 2 computers and my phone or another device.Cheaper than the Logitech equivalent, which is insanely overpriced, and I couldn't find many others with the same profile. Pretty satisfied overall.

Excellent Mouse. No lag, and very adjustable. Build quality is very good. Rechargeable battery is great. Long usage time between charges.

I had a Logitech MX Ergo that was starting to show signs of aging so I decided to purchase this mouse. While the mouse is comfortable and responsive, it doesn't compare to the smooth movement and precision of the MX. The cursor jumps around a bit and the trackball doesn't feel as smooth. Please note, this was right out of the box. Overall, it has very similar features as the MX and you can't really complain with the cost. I intend on keeping it but will likely upgrade to another trackball in the future.

bought this to repalce my Logi Ergo M575. In my opinion this is a way better mouse. the switch between different devices is awesome and works well. Glad I bought it will definanetly buy again for my home office. Its very comfortable on the hand and the adjustment it has is very nice also. Connected great to my PC and iPad.