Editor’s note (10/11/25): After spending another month with the MX Master 4, our impressions remain largely unchanged. The new textured plastic finish and silicone thumb rest have shown no signs of wear and we haven’t observed any erratic behavior with the electromagnetic scroll wheel. Battery life still aligns with Logitech’s rating, while haptic feedback and Actions Ring functionality remain useful if not essential. As a result, we added an official review score to this post. Our original practice is below.
Original post (9/30/25): If you’ve looked for a wireless mouse at any point in the last decade, you’ve probably seen plenty of people recommending a Logitech MX Master. There’s a good reason for this: They’re not cheap, but they’re generally comfortable, versatile, and packed with features designed to make working in front of a monitor all day a little less of a hassle. The current MX Master 3S has been at the top of our wireless mouse buying guide for some time now.
Now, three years after the launch of the 3S, Logitech is launching the new Master MX 4which costs $120 and will ship in October. I have been able to test it over the last few weeks.
While it’s not a major overhaul, the MX Master 4 refines an already productive mouse with a sturdier finish, nifty haptic feedback, and other subtle improvements.
- Extremely comfortable for medium and large hands.
- Tactile and almost silent buttons
- Versatile, high-quality scroll wheels
- Longer lasting finish
- Pleasant (if gimmicky) haptic feedback
- Tons of software features
- Not suitable for left-handed or small hands.
- Minimum voting rate
- No built-in memory
- Without storage compartment for USB receiver
- On the more expensive side
For the most part, this is an iterative update, with the same general shape, battery life, 8K DPI sensor, and ultra-quiet clicks as the previous MX Master 3S. It’s slightly heavier (150 grams vs. 141g), wider (3.48 inches vs. 3.32 inches), and taller (5.05 inches vs. 4.92 inches) than the last model, and the main click buttons are slightly larger. But if you found the MX Master 3 3S or earlier comfortable, you should have few problems here. That said, it is still a heavy mouse designed for palm clamps and right-handed users: Its smooth contours, generous hump, wide thumb rest, and large buttons will fit like a glove if that describes you, but left-handers and those with especially small hands will disagree.
The most striking change here is the addition of haptic feedback, which is built into a small panel inside the mouse’s thumb rest. You can customize the intensity of this effect through Logitech’s Options+ software, or turn it off entirely, but it essentially provides a modicum of smartphone-style feedback to your desktop. When you pair the mouse for the first time, you will feel a little bump. The same thing happens if you move between devices using Logitech “Flow” feature. When the battery is low, it will vibrate. If you’re trying to precisely align a graphic in an application like Photoshop, you’ll get a little buzz when you’ve moved it to exactly the right place.
Jeff Dunn for Engadget
You’ll also feel it when you hover over the options in the Stock Ringa customizable overlay that features different shortcuts depending on the app you’re using. This appears when you click on the side panel; You can use it to quickly access the screenshot tool while in Chrome, for example, or the brightness and contrast sliders in Photoshop.
If this all sounds like a gimmick, well, yes, it kind of is. It’s not the kind of thing that anyone needs. But the effect is surprisingly subtle at the default “medium” setting, and there’s a level of comfort that comes from feeling a confirmed action rather than simply seeing it. I found it more enjoyable than a distraction. The problem is that only a few apps will natively support the MX Master 4’s haptics at launch: Photoshop, Lightroom, and Zoom, with Adobe Premiere Pro following shortly after. You’ll still be able to use system-level haptic feedback on Windows and macOS, and Logitech is releasing an SDK for more developers to integrate the functionality, but we’ll have to see how many do.
Another change is the mouse coating, which swaps the 3S’s rubbery finish for a slightly textured plastic around the top. (The thumb rest area and right side still use a denser rubber.) Some users have complained about older MX Master mice. peeling and wearing out after prolonged use; Time will tell how well the new model will perform, but it should avoid the same type of sweat-induced degradation. Either way, I found it soft to the touch without being slippery. I have also not been able to replicate the precision problems some 3S buyers have had with that mouse’s electromagnetic scroll wheel, which is still made of high-quality metal and allows you to conveniently switch between notched scrolling and free spinning on the fly.
Customizing the action ring in the Logitech Options+ app. (Logitech/Jeff Dunn for Engadget)
There are other minor tweaks and improvements. The receiver included with the Windows model is now USB-C instead of USB-A. The horizontal scroll wheel on the side, still a godsend for navigating spreadsheets, is now more exposed and extends a little further with each turn. The PTFE feet on the bottom are a little larger for a smoother glide. The dedicated gesture button is no longer awkwardly integrated into the thumb rest; instead, it was pulled out in front of the two programmable side buttons. Logitech says there is a more powerful chip inside the mouse to improve connection quality. The borders around the main buttons are now translucent – nothing major, but a bit more stylish. The screws on the bottom are now also exposed, which Logitech says should be useful for recycling purposes in the future.
The rest is practically the same as before, which is not a bad thing. The best feature here remains the virtually silent main buttons, which maintain a pleasant level of scrolling but will never bother anyone around you. Battery life is still rated at a solid 70 days, which seems about right: I haven’t charged the mouse in about a month, and the Options+ app says I still have about 50 percent power left. The design still feels super sturdy, with no flexing or creaking. The side buttons feel firm and tactile. Options+ is resource intensive but still intuitive enough to reprogram buttons and customize application-specific settings. It can still track a variety of surfaces, including glass or the fabric on my couch. You can still connect to three devices simultaneously and switch between them with a button on the bottom as well.
Logitech
On the downside, a USB-C cable is no longer included in the box and the polling rate is still set at a base 125Hz, meaning tracking isn’t as smooth as it could be. (Though you’ll never want to wear something that heavy for gaming.) Mac version It doesn’t come with a USB receiver and there’s still no built-in storage compartment for the dongle on either model. You also have to keep Options+ open to feel the haptic feedback, which is annoying, especially if your work limits the use of third-party software.
Some of those complaints have been issues for a while, so it’s frustrating to see them three years later. Still, they probably aren’t a deal breaker. The MX Master 4 may not be an essential upgrade if you’re happy with an older MX Master mouse, and if they didn’t work for you before, this one probably won’t work for you now. But if you’re a power user in the market for a new productivity mouse, we’d expect this new version to be as popular as its predecessors.
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