Excelente producto, para problemas de espacio, es una excelente opción.

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.

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

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

This trackball is one that is obviously going to work with some peoples hands better than others. It fits my hand perfectly. I have sort of large wide hands with short, thick fingers. I've been using the modestly priced Logitech Marble Mouse ambidextrous trackballs since they first came out in a very light beige with only two buttons. I've always preferred a trackball because I usually use it on the arm of a recliner (sometimes with a jury rigged extended platform). I found the Marble Mice to be extremely comfortable to use with a very smooth rolling action. My remaining ones are starting to get pretty beat up and the lack of a scroll wheel is getting intolerable. So I've been trying out various used, discounted trackballs to find a replacement. I found a couple of Kensingtons. Their scroll rings are nice, but they feel clumsy to use and are nowhere near as comfortable as the Marble Mice. I found a used Elecom Deft on Ebay for about $30 which is what I'm reviewing here. It must not have been used much because it is very clean. There seem to be a lot of them on Amazon for $30 so I ordered another one for a spare and maybe to attempt a bearing swap.It's sort of tall with a small footprint and my hand curls around it nicely. The main buttons are within easy reach and it did not take long for muscle memory to get used to them. They tend to be rather small, which to me means I don't hit them accidentally. It of course has a scroll wheel which can also be pushed down or in as two programable extra buttons, although I can only get them to perform the same function. There is a software program called Elecom Mouse Assistant that works on Windows and Macs. To get it out of Japanese, you have to choose English when installing and then set it to English on the bottom left and then close the program with the OK button. There is a thin line of three buttons that fit under the index finger. I set the forward one to shift so that I can easily extend or adjust highlighted blocks of text.The ball is a little smaller than the Marble Mouse's. It has ruby bearings which are reputed to be not as smooth as the zirconium ceramic ones on the Marble mouse. The Kensingtons also have ruby bearings. One of them is the large square Expert model with a much larger ball. The other is an Orbit which came missing the ball, but it works fine with one of my old Marble Mouse balls. They are both considerable less smooth than the Marble Mouse. The Deft is also less smooth than the Marble Mouse, but nowhere near as much as the Kensingtons. My guess is that it's because of the ball's smaller size and therefore less mass. I find it very usable. There's a switch in front of the scroll wheel for two levels of sensitivity. I use the slower more sensitive setting. I find that by holding three fingers together I can easily move the pointer the full width of the screen in one motion. It's still not as slow and sensitive as the Marble Mouse. I am not a gamer and use it mostly for web browsing and writing. I do do CAD and Graphics once in a while and will probably use one of my more sensitive trackballs for these applications.One thing I really like about it's form factor is that the base is very easy to grip and is always in close proximity to my fingers. Trackballs always seem to wander and twist and this one is very easy to reorient and even pick up and move.If there's anything I could change, I would put the scroll wheel (or a second one) in the front between the ball and the right mouse button. I would also give the right mouse button a more sideways motion so that it could be opposing the left mouse button's motion. It feels a bit incongruent to push down on the right button and then sideways on the left one to choose a menu item. And it would also be nice to have the Deft Pro's bluetooth and USB-C cable. With the Huge, it looks like Elecom is moving towards the Deft Pro's button arrangement. If they discontinue the Deft, I will miss the line of three extra buttons under the index finger.Overall it's an ergonomic masterpiece.__________________________________________________________Edit: Looking closer, I see the Deft Pro and Huge do have a line of two buttons under the index finger with the third one apparently moved next to the right mouse button.__________________________________________________________Edit: Looking closer still, I see I have mistaken a picture of the Huge for a deft Pro. The Deft Pro does not have the line of two buttons under the index finger. It has the flat area under the index finger as one extra button. The other extra button is down by the thumb.__________________________________________________________One more correction. The Elecom Deft Pro has a micro USB connector -- not a USB-C connector. I know this because I just bought a used Deft Pro to try out, having become something of a trackball buff.

Por problemas en mi muñeca, decidí probar algo distinto al ratón tradicional (mouse vertical, el logitech M-510, el trackball M570 y finalmente este me pareció el más cómodo. Desde un principio la calidad no parecía la mejor ya que los botones superiores F1, F2 y F3 funcionaban con dificultad. De los tres años, de uso, sólo 1 año tres meses fueron intensivos en el trabajo y el tiempo restante, uso moderado en casa. A la fecha, el botón F2 ya no funciona y el botón izquierdo funciona intermitentemente lo que lo hace poco útil. Intenté remplazar los interruptores (que resultaron ser chinos) y fallé en el intento. La rueda y sus botones, particularmente los laterales, son algo duros. Los botones auxiliares del lado izquierdo (avance y reroceso de página) tienden a activarse al mover la rueda. El software, aunque algo anticuado, me resultó muy útil ya que puedes configurar los botones para cada aplicación de diferente manera. La batería dura muy poco (unas 4 semanas) comparado con los logitech, un par de pilas recargables (una en uso y otra de respaldo) solucionan el inconveniente. Para mí, las ventajas superan las desventajas por lo que lo compraré otra vez ya que mis molestias en mi mano han disminuido.

Es muy cómodo y los botones funcionan bien, aunque tardarán un poco en acostumbrarse a la trackball si, como yo, sólo habían usado versiones con la bolita en el pulgar

Lo uso todos los días. Lo he configurado para hacer Zoom in y Zoom Out y para copiar y pegar con los botones pequeños. Puedes tener varios perfiles de uso (funciones diferentes para cada botón en cada perfil) de acuerdo a tus necesidades. Se puede ajustar la velocidad del puntero del TrackBall por medio del software desde Lento hasta Rápido. Después de algunos días de práctica me adapté al Trackball pero ahora que me he acostumbrado no regresaré a usar los mouse. Ergonomicamente tiene muchas ventajas ya que no cansa este Trackball. De fácil mantenimiento. Tengo la versión con cable y lo volvería a comprarlo de nueva cuenta.

Soy usuario de Trackballs desde muchos años, desde el primero que sacó Micro soft quizá hace 15 años o más. Tengo de otras reconocidas marcas y me gusta el concepto. Pedí este pensando que usar los dedos índice, medio y anular sería casi lo mismo. Me equivoqué rotundamente! Entre que la bola no tiene nada de precisión y salta y que toma mucho tiempo para acostumbrarse a la posición de los botones, preferí devolverlo y regresar a mi viejito trackball que sigue necesitando remplazo. Admito que mayoritariamente es mi culpa no acostumbrarme, pero no es nada fácil aun para un usuario con años de experiencia y que la falta de precisión sí es culpa del device. Por cierto, la devolución con 10 de calificación, la solicité un día, al otro lo recogieron y al otro tenía el dinero en mi cuenta de Amazon.

ESPAÑOLEl hardware parece funcionar bien, pero el software es totalmente defectuoso, no se puede guardar la configuración en absoluto, bueno, puede guardar la configuración pero no puede volver a leerla. La sección de perfiles no funciona en absoluto en la utilidad y falla completamente .. Sin eso, tienes un trackball simple por un precio caro, que en realidad no es preciso.ENGLISHHardware seems to work fine, but software is totally faulty, you can't save settings at all, well, you can save settings but can't read them back in. Profiles section doesn't work at all in the utility and completely fails.. Without that, you have a plain trackball for an expensive price, that t's not really precise.

Adatto solo a chi sente il bisogno di posizionare la mano in maniera diversa rispetto ai mouse tradizionali, per questo non è adatto a tutti, personalmente lo trovo comodo nell'assolvere le sue funzioni, e anche accattivante come design. Prodotto eccellente ed economico rispetto ad altri più blasonati.

La caja y el estuche resguardan bien el mouse. Como no trae instructivo ni en inglés o español, fue complicado saber cómo configurarlo. Una vez que lo hallé en linea, su funcionamiento es muy eficiente, sin embargo, no es posible reducir la velocidad del "scroll ball" y resulta imprecisa su utilización.

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.