ELECOM EX-G Left Handed Trackball Mouse, 2.4 GHz USB Wireless, Ergonomic, Thumb Control, Tracking Roller Ball, 6 Programmable Buttons, Tilt Scroll

Good trackball mouse, like the 3rd button and the software allowing custom setup, really helps with my engineering work. The buttons are a little on the louder side when clicking compared to other devices. Good value, comfortable to use and surprisingly quick to adjust to using it

This trackball has changed how I use my computer. it is excellent - comfortable, accurate, a joy to use. I'm not a left-hander but use a trackpad with my right in a dual-monitor set up. Wish I'd discovered this years before. The ball works smoothly; super-comfortable in the hand. So good, I immediately bought another.

Great for a wrist injury as hand and wrist dont have to move, programable buttons and a very nice fit to my hand - I am six ft tall for comparison. Takes a day or so to get used to the trackball if you are used to using a conventional mouse but after that you can get some very accurate movements.There is only one negative, the trackball invariable before stiff to move in a certain place. I believe this is because the ball is not perfectly spherical, it is only a minor annoyance as I just spin the ball quickly to get rid of it. I think this will lessen as it wears in slightly. MOverall, I am very please with my purchase!

This is a great product! Works very well on Chrome 134. Only the very left hand button doesn't do anything.

I already use a Logitech M570 but found after years of use my thumb was getting sore if I used it a lot in the evening. I'd have got a left-handed M570 if they did one but this trackball was the only option I could see. If you're happy using a thumb trackball then this is great. Nice smooth action and the only slight complaint I have about it is that my middle finger (resting on the right-click button) sometimes fires it accidentally if I tilt my hand forward at all as the pressure to click it is light. Otherwise it's all straight forward. The function button (ring finger) has to be setup with the Elecom utility. Yes, the instructions packaged with it are in Japanese, but there's a QR code and web address supplied to get the multilingual manual (which you'll need for all of about 2 minutes). Ideal if you already like using a right-thumbed trackball and want something to switch around with.Update: After 3 days of use I have to say that the sensitivity of the buttons is infuriating. Just the weight of my middle finger causes me to unintentionally right click all the time. The third (function) button is also very sensitive. Such as shame, it's fine in every other way but I'm going to have to return it because of this functional issue.

I need a left handed trackball due to an injury to my right wrist. I am normally right handed. One of the few left handed trackballs available, this became almost a default choice. One initial problem was a slight "stickiness" when you first try to scroll with the ball. That made accuracy difficult. A few hours of use has smoothed that out and the unit now functions very well, with a similar degree of accuracy to the Logitech trackballs I normally use. I am using the trackball with Linux (Debian 12) which is not noted as being supported but the OS had no trouble recognising and enabling the device.

Not great quality wise, it's pretty much made as cheap as possible. The ball is riding on small plastic nubs which it wares down as it's used. This cause it to have a little "stiction" and resists small movements. It's not easy to make little cursor movements using little thumb movements due to the sticking. It gets a little better if the running nubs are wiped, but then it's back to sticking in a few minutes. I don't think it will last more than a few months due to the quality and the fact that the ball will slowly wear down the housing it's in.I regret not buying a more expensive trackball.

The packaging is superb. No fancy printed, oversized glossy boxes. A simple protective box. There is no 200 page multi-lingustic manual. Only the need to use the website to download the manual and software.The materials could be a little better. It feels flimsy. The ball isn't quite as smooth as I would like. This is my first tracker. There are minute areas that feel hesitant. This could just be my inexperience.The downloadable software, manual and controllers, is easily found. As is the configuration of profiles and the assignment of buttons.I will update this review further after a few months usage.