Customer Ratings & Reviews

The Logitech MX Master 3S, when compared to the previous generation 2S model (which I also own), shows some noticeable improvements. Unfortunately, these improvements are largely tempered by some regressions. Overall, it remains a decent mouse which I’m sure many people will like. Logitech was an early pioneer of 3-device Bluetooth pairing, which was the main draw for me to the MX Master series. Now that it is a more common feature, there’s less that makes this mouse stand out. At 140 grams, this mouse is heavier than usual (though very slightly lighter than the previous generation’s 145 grams). I enjoy heavy mice, and this suits me well. It has all-around very solid construction. It is quite tall, which may seem problematic without the use of a wrist rest. The ability to switch between ratcheted and smooth scrolling is a great feature I’d hate to do without. The Logi Options+ software has a neat SmartShift feature, which allows automatic switching between these two modes. However, I find that feature a bit janky and prefer manual switching. The sensor is smooth and accurate, adapting well to many different surfaces. On paper, the advertised 70-day battery life is in par with the previous generation 2S, but it’s hard to adequately test within the five-day period I was granted before reviewing. [ Improvements ] The forward and backward side buttons, while extremely ordinary, are a massive improvement over the absurd design of the previous 2S model. In that model, the buttons were stacked on top of each other, were oddly shaped, had sharp creases along their center, and partially obstructed the horizontal scroll wheel (along with a pointless endcap on the other end that also obstructed the wheel). As previously mentioned, the horizontal scroll wheel is now unobstructed and easier to scroll with. It is also larger, and along with the vertical scroll wheel, no longer has the rubber construction along the center, which will undoubtedly make both easier to clean biofilm out of. I’m not sure if the vertical scroll wheel is larger, but it definitely protrudes farther, which allows you to scroll a bit more before having to reset your finger. The gesture button hidden under the thumb rest has much better audible and tactile feedback compared to the previous 2S model. Though, this button is still quite awkward to use. By default, the mouse is configured at 1k DPI. The Logi Options+ software can enable 8k DPI, giving some future-proofing buffer for use on high-resolution displays. [ Regressions ] The vertical scroll wheel, when in ratcheted mode, has a rather strong springiness as it settles into a new position. I find this quite irritating. I had no such issue with the previous 2S model. While possibly a unit defect, I noticed the left and right buttons exhibited a ‘sproingy’ noise similar to what can often be found on the buttons of cheap game controllers, especially the shoulder buttons. This was more noticeable in the left button than the right, and usually involved pushing the button well past the switch trigger point, followed by a rapid release. The previous 2S model has three battery level indicator lights capable of indicating 100%, 66%, 33%, and 10% charge levels. These have been replaced by a single light in this 3S model, which now indicates 100% to 10% charge level, or 10% and below charge level; far less informative. While this may not be a significant issue when new, as the battery life worsens over time, this may hamper your ability to keep the mouse charged. [ Other Changes ] The left and right buttons are much quieter than those on the previous 2S model. I see this as an improvement, but this is subjective. The left and right buttons have a travel distance well beyond the activation point of their switches. This goes beyond what I’ve noticed in any other mouse I’ve used. The change from Micro-USB to USB-C connection is welcome, but they get no points for keeping up with certain new regulations.

This is the second MX Master mouse I've owned. I gave my first one to my older son when he was going off to college with the thought that I would immediately go out and buy a replacement for myself. For some reason that didn't happen and I ended up just using my Magic Trackpad with my desktop Mac. When I set this new MX Master up and started to configure the buttons, scroll wheel, etc using the Logitech software I immediately realized what I had been missing in the interval period between giving my first MX Master to my son and then setting this new one up. And, as it turns out, I missed a lot. I think the ergonomics this mouse affords is leaps and bounds ahead of using something like the Magic Trackpad (or even the Magic Mouse). The MX Master is definitely the most wrist friendly input device I've used. And, without getting into all the details, the Logitech software that you download to use in conjunction with the mouse gives it much more functionality that opting not to use the software would be laughable. While you don't have to use the software in order to use the mouse, I definitely recommend doing so - you won't regret it and, in fact, you will be pleasantly surprised by all the things you will be able to do in addition to the built in basic mouse functionality. As noted the MX Master works via a bluetooth connection only - there's no dongle included that allows one to bypass BT. While I understand the cost cutting reasons for this, I wonder just how much money is being saved - a finicky BT connection can definitely be a pain point for a product like this and giving the customer / consumer the ability to not have to deal with this right out of the box would be a plus in my mind. I would say that's my only real gripe about this version of the MX Master.

Love this mouse. It fits very comfortably in your hand and works flawlessly.

[PROS] Feels Amazing: Being 6'0", I've never had a tremendous issue with a standard size computer mice being moderately, uncomfortable. However, my hand noticed an instant improvement upon using it. The shape of the mouse creates the perfect posture for my hand. The rubberized texture pattern is smooth to the touch and very light against the skin. Mouse clicks are subtle, and I haven't performed any accidental clicks. Robust Functionality: I'm able to open apps, scroll, zoom, and adjust different things as needed. The Logi Options+ app is streamlined to allow me to jump directly to customizing the 3S according to my preferences. Commands execute instantly, and I haven't observed any delay in response times. [CONS] Only one glaring issue: The biggest negative about the MX Master 3S is that they don't have a left handed version. Its an issue that doesn't affect me, but will be problematic for others. Logitech has alternatives, but I think a real opportunity is being missed with consumers. [CONCLUSION] In all transparency, this the best mouse I've ever used. Its designed well, and gives me every ability I need for my work day and personal projects. It's good enough that I'm looking into getting a second one for travel.

I have used 2S for many years now, 3S improved on almost all the areas except one, i.e. the actual clicks buttons. Somehow the clicks are not as crisp as the 2s, and I am not talking about the sound of it. I tested it with the headphones on when I was not able to hear the click sound of 2S and yet I could feel that something is different when clicking the 3S. It is a good thing for office but for a home office or home PC, I am not a fan. It feels similar to when I put o ring on my keyboard. I would love if Logitech will offer two versions in future generation allowing user to pick the click as normal or soft. If I accept the sound of my mechanical keyboard, I will accept the sound of the mouse clicks. That being said, it works wonder in nighttime work/gaming session by not waking up people in next room. I swap to a non-mechanical keyboard (MX Keys) which uses the Logi bolt receiver; and also supports this mouse. I am using the mouse with the receiver and have not tested the connectivity over Bluetooth. Now I said that this improves on everything else, that includes the move to USB-C, side button placement, better scroll wheel placement, volume rocker and the side bottom click is much more pronounced vs the 2S. So, improvement all the ways except for the clicks which I personally am not a fan of though works well in the night.

So, I have had several MX Master mice in the past and they have always been a strong contender at least for me for best every day and comfortable mouse. I was a little hesitant at first with this Bluetooth Only Edition variant as all the other MX Master Mice I have used in the past used the USB receiver. I'm glad to say at least with all the computers I need to use this mouse on just using it as a Bluetooth mouse has not been a problem in anyway. It has the same comfortable grip and the performance for my uses is great. I've never been one who was super sensitive to polling rates and all of that, but I do some single player gaming and lots of work-related task without any issues whatsoever. Bluetooth connection with all the computers I use on a regular basis has been very solid and I have not had any issues. It's nice that all it takes is a simple click of the small button on the bottom to switch between systems and switching is super quick. It has, so far, worked flawlessly on both my windows laptops and a Mac studio that I use for some personal projects. Overall, it's just as good as the other variants of the MX Master I have used without the need to worry about a USB dongle for "Best performance".

Great mouse. I also have a MX Master 3S Mac version which is almost the same, and find it super comfortable in my hand. Smooth and responsive on my Mac Mini, MacBook Air and Windows laptop, and I love the option for multiple devices (up to 3) via bluetooth. Simply flip it over and tap the button. Super convenient since I have multiple computers connected to the same monitor and keyboard setup as well. The side thumb roller wheel is great for panning large Excel files or CAD drawings. Top roller wheel smooth as well. Great battery life, and easy to connect to a charge cord and still use like an "old-time" wired mouse. Definitely recommend!

Should have bought this sooner. Much easier to control my movements than using the cursor pad on the laptop. I am shaky, especially in the morning, this allows me to work more efficiently. Its design is very comfortable!

I like the bluetooth connection rather than the usb dongle for the mouse. I also find the ergonomic design very comfortible.

Nice mouse, but it didn't perform any differently than my current mouse, which I thought it would at least feel better to hand/wrist....but it didn't. So I'll be returning it.