ElecomDEFT Trackball Mouse, Wired, Finger Control, 8-Button Function with Smooth Tracking, Ergonomic Design, Windows11, macOS (M-DT2URBK)

After suffering a scaphoid injury 10 years ago I have recurring wrist pain around my thumb area which can get worse or better depending on how I take care of my wrist.I work on a PC for 8 hours a day, and was starting to feel the pain ramping up. I could feel the movement of a normal mouse wasn't helping the issue so started reading into alternatives.A lot of trackball mice these days use the thumb for the trackball, which wasn't an option for me and I eventually settled on this one.It took quite a lot of getting used to to be able to use this accurately and efficiently, I have had this mouse for just short of a year now and using it is second nature.At first the ball doesn't really roll smoothly in it's cup, that improves with time. DO NOT use alcohol or any solvent to clean the ball/cup, the oil from your skin actually helps the ball roll smoothly so don't remove this if it can be helped, just wipe any dust away with a cloth.I feel I've had it long enough to confidently comment on it, the quality is brilliant, this thing feels like it'll still be going strong in 10 years easily.There is some Elecom software you can use with this mouse that lets you customise it to the nth degree. I have my 3 custom buttons at the top as cut, copy and paste, my left thumb buttons are forward and back. There are endless options for customising this and the software is great once you get it into English mode as it starts in Japanese.It seems to go through batteries quite quickly (needs changing every month) but I do have to have it on the higher power mode because of the distance from my PC. It only takes 1x AA battery though so it's no hardship.My one gripe and this is only really a personal problem (hence no star reduction) is that I would've preferred a trackball with the scroll wheel around the trackball as it is on some other mice. Having it thumb operated can sometimes cause me some pain, but I'll generally avoid scrolling this way if it's anything over a couple of pages.

First of all I'm writing this about the DEFT version of this trackball with the smallest of the 3 balls (M-DT2DRBK).I'm a time user of trackballs including the classic but sadly departed Microsoft Trackball Explorer 1.0 (I own 3), and the Logitech Trackman Marble FX (even rarer and more worshipped than the MTE).Is this an MTE replacement?Maybe.Overall build quality seems much better than the MTE. I've seen teardowns of the HUGE model, and if this model is similar, then build quality surpasses the MTE especially on the inside!Ergonomics wise.... the DEFT I find is not quite as comfortable as the MTE. The ball size (34mm) is noticeably smaller than the MTE (44mm). But for me at least the hand fit is very similar. This results in skittery accuracy for me.In terms of smoothness, those ruby bearings are just as good as the ceramic bearings I've fitted in my MTEs.(No nose grease was needed to get the ball spinning smoothly)Buttons feel is OK, perhaps a bit heavy. I'd prefer 2 buttons on the right like the MTE for backward & forward. Like others have said the 3 function buttons on the top are hard to get to, so use them for rarely used functions.I did try the HUGE size too. This too is built very well, but I found that for my hand size (22cm spread tip to tip from thumb to little finger) it was simply too big & so quickly became uncomfortable. The big ball (54mm) was nice though.Ideally I think I'd prefer the size of the Pro (44mm)...but as I write this, it's more than 3x the cost!!!!!The moral of the story is...if they fit your hand size the Elecom Trackballs are very good. If one size is wrong for you, do try another.I'll probably keep this one as a nice wireless ball, but so long as I can keep gluing them together again, it probably won't replace my MTEs full time.....

AN ELEGANT, UNDERSTATED JAPANESE WARRIOR! DESIGN AND FUNCTIONALITY.• This trackball is absolutely excellent.• It is well built, although it is made out of plastic, the trackball feels robust and compact, offering a plenty of sensibility and feedback when navigating the internet of working on applications.• The design is perfect, its looks is the perfect blend between high tech and professional devise; it has an underlying sense of Japanese wisdom and efficiency.• Its matt black colour, is understated, never looks dirty nor attracts dust• It is very intuitive, all its buttons are well located and fitted. They need to be pressed hard in order to operate then, which means they are long lasting.• The track ball has the perfect size (although it looks small at first). I soon realised the ball has the perfect size as it fits perfectly well with the buttons located in its left and right hand side. Three fingers can work in complete harmony.• Functionality!!!!Every button is programmable, with at 46 different functions plus gestures; this is what makes this devise so special.• The wheel’s performance is like a plane control, smooth and precise.• Improvements:It needs a protecting bag/box to protects its buttonsThe back of the trackball needs more high in order to allowed the hand to be fully supportedon the devise.

El tamaño del mouse se ajusta muy bien a mi mano, permitiendo que la muñeca y antebrazo descansen sobre el escritorio sin necesitad de un mouse-pad, es ergonomico

super pratique au niveau place sur le bureau et facilité d'utilisation

Funktioniert sehr gut ist aber für meine großen Hände etwas klein.

So I went through quite a few before I settled on the Logitech Ergo options. I have small hands and it seems like a lot of the products out there are a tad bit too big. I found that this Elecom one has way too many buttons to be of full use to me. It also feels very plastic-y and light. I prefer a solid build, which is why I prefer the MX Ergo from Logitech. Elecom seems to have a good reputation though, so if you want lots of buttons and the novelty of the thumb-operated scroll wheel, by all means go for it. But you get what you pay for. Personally, this one just didn’t feel ergonomic for my hands.

Haft den här trackballen förut och älskar den. Passar min lilla hand perfekt och att den har sladd är ett stort plus. Det enda som fattas är att man måste ta fram manual på engelska på nätet, bara japanska och några andra asiatiska språk med på pappers-manualen. Men det är ju en bagatell.