J-Tech Digital

J-Tech Digital Ergonomic Mouse with Wireless Connection Removable Palm Rest Thumb Buttons Rechargeable Battery 800 DPI Compatible with

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$24.99$26.69

About this item

  • Ergonomic Wireless Design: The J-Tech Digital V638’s comfortable, ergonomic “handshake” design greatly reduces arm/wrist/hand strain while providing relief for carpal tunnel syndrome. Back/forward thumb buttons provide extra convenience. (Button functionality can also be changed or reassigned using third-party software.) Works on most non-metallic surfaces. The built-in lithium battery is fully rechargeable.
  • Removable Palm Rest: This ergonomic mouse features a detachable non-skid anti-sweat palm rest that reduces drag, making it easier to maneuver the mouse across the surface of a mousepad, tabletop, desktop, etc.
  • 4 Adjustable DPI Settings: Users can adjust responsiveness to 800, 1200, 1600 or 3200 DPI depending on their need and/or preference. 360-degree signal allows for full freedom of ergonomic mouse movement. Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces.
  • Wide Compatibility & 3 Power Saving Modes: Compatible with Windows 7/8/10, XP, Vista 7/8, Linux, Mac OS, etc. 3 levels of power saving modes ensure that when not in use, the battery charge is preserved to provide a longer use time.
  • Free Lifetime Support: The V638 ergonomic mouse, like all J-Tech Digital Products, includes a One-Year Manufacturer Warranty and free lifetime technical support from our US-based Customer Support Team (Available M-F 9AM-6PM CST). Contact information available on the J-Tech Digital Seller Page.
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Product details

BrandJ-Tech Digital
ColorBlack
Connectivity TechnologyUSB
Special FeatureWireless
Movement Detection TechnologyOptical

Technical specifications

product_dimensions5.83 x 3.74 x 3.9 inches
item_weight0.67 ounces
item_model_numberV638
batteries1 Lithium Ion batteries required. (included)
best_sellers_rank#305 in Computer Mice
date_first_availableFebruary 5, 2020
manufacturerJ-Tech Digital

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Customer reviews

4.16,257 ratings

Customers say

Customers find the mouse ergonomically comfortable, with one noting it's the best ergonomic mouse they've used.

★★★★★

It Took Away My Wrist Pain

ElodineJanuary 24, 2021

My wrist was becoming quite sore from overuse on a traditional mouse. I knew that they were making new types of mouses, so I checked out the ergonomic ones. The reason I picked this one was mainly chance. There are a number of mice of this general configuration, and since this is not a store where you can handle the wares, I had to just go ahead and pick one. I am glad that I picked the one that I did. It is perfect for me. I would say I have a medium-sized hand, perhaps a bit large for a female and quite small for a male. When I grip the mouse, my fingers find the appropriate buttons instantly. Not only that, but for the first time I am using the thumb buttons since they are easy to use. Within a few days of using this mouse, my wrist pain had all but disappeared. Now that I have had it for a while I have no wrist pain. There is a learning curve for using this mouse. You move it around with your elbow and shoulder more than your wrist and this takes a while to get used to. At first, I was dragging my pinky finger beside the mouse so that it would not overshoot its destination. Now, I do not notice myself doing that anymore. This mouse will not work with a neoprene mouse pad. I had to switch out to a metal mouse pad, and let the mouse travel on the "leather" side of the mouse pad. It squeals when deployed on the aluminum side of the mouse pad. It glides very smoothly and the piece of plastic to rest the side of your palm on is a great help. I had to give this mouse a rating as far as its gaming capability. Unfortunately, I am not a gamer, so I just put in five stars because it is a nice mouse. Once you get control of it, it does glide around very fast with little friction. Also, I had to rate it as far as battery performance goes. This is a wired mouse with no batteries. This is a good thing for the environment; batteries in landfills create heavy metal pollution in groundwater, so I try to avoid accessories with batteries when I can, and use accessories with removable batteries which I can recycle if I must have batteries. I have always preferred wired mice. I just examined the bottom of the mouse, and discovered an on-off switch. this controls whether the lines around the top of the mouse glow or not. There is also a button you can depress that I suppose adjusts the DPI. A visit to the manufacturers website reveals that you can download software and customize the buttons. I tried downloading the software, and found that a wide variety of functions can be assigned to the buttons on the mouse, including three types of wheel clicks that don't do anything by default. I set mine so that a simple click on the scroll wheel will double click what I am pointing at. Cool. Read more

Review image 1
★★★★★

Not a gimmick. Highly functional and recommended.

Robert FiedlerOctober 19, 2025

This is the second time I have purchased this item. It is a game changer as far as a mouse can be. The buttons are very responsive as well as the tracking. The shape and size fit my hand perfectly. The included dongle makes setup and connectivity a breeze. I am able to use this mouse for hours and feel no discomfort or fatigue. There is no lag or hesitation when using. This mouse is very functional and not gimmicky. Charging is a breeze and the battery lasts longer than other products I use. The price is respectable but could be better. Read more

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★★★★☆

UPDATED - Good ergonomic mouse, but with a few oddities and my original mouse failed in 1 day of use

Graeme BritzJune 4, 2018

7/8 Update: I've now been using this mouse for a few weeks and its grown on me. I like it better than the Anker mouse and think its worth the additional $10 in cost. It is more strain relieving on my wrist than the Anker mouse is. Upgrading the review score to 4 stars. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 6/27 Update: J-Tech contacted me after I posted my negative review and was insistent on sending me an new device, free of charge. I've been using the new mouse now for a few days and it looks like this one has a working optical sensor, yay! This mouse did require me to use a mousepad (this was unneeded by other mouse models I've tried) for the optical sensor to track properly. Ergonomically, this mouse is much better than a standard mouse for my wrist. Its unusually heavy, something which can be remedied easily by removing the bottom plate and removing the added weights they put into the mouse and the angle is a little funny, but it is still a pretty good ergo mouse. After my original device failed, I bought the Anker Vertical Ergonomic mouse, which I think is a better buy ($10 cheaper at the time of writing this review, and more comfortable for me). I am still going to use the J-Tech mouse as a backup mouse however. Giving this mouse a 3-star review now up from 1 star for the good customer service and the fact that this is a pretty good mouse for the price point. I wish they didn't add additional weights to the mouse and that the first product I received was functional. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Original Review: I received this mouse last week and today is the first full workday I've used the mouse for. Today, after 6 hours or so of using the mouse, I stopped getting cursor tracking from the mouse. I can still click with the mouse, but I cannot use it to move my cursor on my screen. The mouse was comfortable and good at relieving wrist strain. Since other reviews are mostly positive, I think I got unlucky and received a defective product. Read more

★★★★★

Worth every penny

Carol A EllerDecember 18, 2025

I love this mouse! It took no time to get used to. This is my second one. (Knocked onto a concrete floor MANY times so it finally broke and needed to be replaced.) It is so comfortable and I no longer get the wrist fatigue. Especially good for making graphics. Will definitely get again if this one ever wears out. Read more

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