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My Logitech MX Master 3S is the best mouse I have ever used. No, was. The Logitech MX Master 4 that I have been using over the past week doesn’t feature major upgrades but has the right changes in the right places to easily usurp the crown. It officially launches today Tue, 30 Sep 2025 alongside the Logitech Signature Slim Solar+ Keyboard.
If you’re in the market for a mouse, don’t make a decision until you read this.
My experience with the Logitech MX Master 4
First impressions, the Master 4 is similar to, but distinctly different from, the Master 3S. The general shape aside, it has gained an extra button on the left and translucent Left and Right buttons (you can just see the translucent edge overhang in the photo below, on the left). The thumb rest also juts out significantly more but with good reason, which I explain below.
Logitech has decided on a fine textured finish that they assure us is more durable and which feels more premium, too.
The new model clocks in at 150g, slightly more than the 141g of the 3S but there is enough of a difference for you to tell them apart even with your eyes closed.
If you are using the Logi Options+ app, please update to the latest version to get the most out of the Master 4. As I was using it pre-launch, the app would not add the new mouse to its home screen, but an update over the weekend smoothed out that wrinkle.
Haptic feedback panel
Perhaps the innovation that will get the most attention on the MX Master 4 — and rightly so — is the haptic feedback panel on the thumb rest.
The thumb button on the Master 3S was a good idea but not executed very well; it always felt awkward to press down the side of my thumb to use it. It was largely ignored by other users, too; I remember talking to a tech shop salesgirl who was selling the 3S and she did not even know there was a button there. In her defence, there is no discrete button in the 3S, just a tiny raised strip that hardly gives it away.
In the Logitech MX Master 4, the thumb rest is a beautifully contoured island in a shade different from the body. Activation is triggered by a simple squeeze, and the result is instant and physically very ergonomic. The button has become much more functional, thanks to what Logitech is calling the Actions Ring.
Click the panel and an Actions overlay (above) appears on-screen. All 8 icons of the Actions Ring can be customised to help you be more efficient. Creatives will love that it can be pre-set to specific apps such as Adobe Photoshop, Premiere Pro, Illustrator and Lightroom Classic to cut down time spent on repetitive actions.
The strength of the haptic feedback itself is customisable, too, and is triggered every time your pointer glides over an active option. All changes have to be made in the Logi Options+ app.
Works on any surface
I have always been slightly disappointed with the performance of the Logitech MX Master 3S on glass. Most nights, I end up working at my dinner table and the 3S appealed to me with its promise to work on any surface. While it did register mouse movement on the glass tabletop better than any other mouse I’d used before, the pointer did wander by itself often enough that I now always use it with a mousepad on glass tabletops.
Logitech seems to have resolved the issue with the MX Master 4. In the week or so that I have been using it, not once did it fail to accurately translate my mouse movements to the pointer on my screen. I’m surprised the company isn’t pushing this as a key selling point.
Unchanged, excellent features
Are there major upgrades compared to the 3S? Not quite — the Master 4 and Master 3S share the same high-precision Darkfield 8,000dpi sensor, super-quiet buttons and 1,000 lines/sec scroll speed. They also have the same ability to go 70 days on a single charge, and to deliver 3 hours of use after charging for just 1 minute via the USB-C port. I love that the Master 4 has retained the ability to pair with 3 separate devices simultaneously.
Together, those features made the Master 3S an iconic device ahead of its time, and the Master 4 carries the legacy competently.
Final thoughts
Having used it for a week, I can testify that the Logitech MX Master 4 is an excellent mouse, ideal for productivity, efficiency and work in general. But should you buy it?
My Logitech MX Master 3S cost me S$189 in 2023, and the Logitech MX Master 4 will retail at S$199. Considering purely the 2-year gap, a S$10 increase seems reasonable.
If your Logitech MX Master 3S is still in good shape (mine isn’t), you may find it hard to dump a loyal workhorse right away… unless there are some good launch offers. Muster up a little patience and Black Friday (28 Nov) and Cyber Monday (1 Dec) deals may be the way to go.
On the other hand, If you have a Master 3, Master 2S or any earlier model, an upgrade to the Logitech MX Master 4 is well worth it — the difference is tangible and phenomenal. That’s especially true if you, like me, use your computer for heavy work (or school), or have had problems working on a reflective tabletop.
You can buy the Logitech MX master 4 from the Logitech Official Store on Lazada and Shopee. It is available in Graphite, Pale Grey and White Silver (Mac variant only).
