Over the years, I’ve owned a lot of mice, cheap ones that fall apart, gaming ones that feel like toys, and a couple of solid workhorses. The MX Master line has always been a rare exception, especially the last Logitech MX Master 3s. It’s the kind of tool you forget is a tool because it just starts working the way you want, and as expected, the new MX Master 4 maintains that throughline.
It feels right in your hand, eliminates friction from repetitive tasks, and quietly enhances the flow of your work. But there’s a twist worth knowing before you tap buy.
The feeling that makes other mice feel cheap
After picking it up, the first thing you notice is its design and how natural it sits in your hand. Logitech didn’t chase a flashy redesign; they just fine-tuned what people already loved. The thumb rest, the curve, and the weight all combine to make long sessions painless. The scroll wheel is already addictive; it can sprint through a thousand lines in seconds or give you precise, single-line control when you need it. For anyone who spends real hours moving a cursor, that alone changes daily friction.
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The smart side of comfort
The MX Master 4 isn’t just ergonomic. It’s about shortcuts that actually save time. Buttons fall under your thumb and index finger where you expect them, and the software finally feels less fiddly. Map a gesture to switch desktops, map the thumb wheel to scrub a video timeline, and you’ll shave minutes, not seconds, off repetitive loops.
Flow still works like magic if you use multiple computers, move across screens, copy on one device, and paste on another. It’s the kind of small workflow win that compounds.
Here’s the new part — and why it matters
Logitech put haptics in the MX Master 4 and made them useful, not gimmicky. There’s a Haptic Sense Panel in the thumb rest that gives subtle vibrations tied to actions. Press it to bring up the new Action Ring, get a quiet nudge when you switch screens, or feel feedback when you trigger app shortcuts.
The Action Ring itself is an overlay you summon with that press; it can be customized per app and even nested so you can drill into specific commands without touching the keyboard. Logitech also updated the internals, added a new USB-C Bolt receiver option, improved wireless stability, frosted semi-transparent primary buttons, and the familiar MagSpeed wheel and Darkfield tracking.
Battery is still claimed at roughly 70 days on a charge, but crank up haptics, and that number drops. Preorders launched at the same price tier Logitech has used before, and reviewers note it’s a meaningful buy for new users but not a must-upgrade if you already have an MX Master 3S.
Battery that refuses to die (until you ask it to)
Practically speaking, the MX Master 4 behaves like a mouse with no charging schedule. With normal daily use, you’ll forget where the charger lives. When you do need juice, USB-C quick charging gives hours in a minute.
The only real battery trade-off is haptics: leave them high and deliberate feedback will shave time off the headline battery figure. If battery is sacred to you, dial the haptics down; you’ll still keep the ergonomics and scroll magic.
The catch is who this is actually for
Calling it the best mouse isn’t marketing copy; it’s a user-profile callout. If your day is heavy on multitasking, app switching, and editing. Or you jump between devices, this thing is a legit productivity tool. If you live in spreadsheets, video timelines, or layered design files, the Action Ring and customizable gestures will start saving you real time.
If your day is mostly web browsing, email, and light docs, the MX Master 4 will be lovely but overqualified. It’s not built for esports-grade responsiveness, and people with very small hands may find it a touch too large. Also, if you already have the Logitech MX Master 3S and you don’t care about haptics, there’s less urgency to upgrade. The 3S still holds up impressively.
Conclusion
For people who love to treat their desk as a full functional workspace, the MX Master 4 is easy to recommend. It’s the best mouse in its category. Because it blends comfort, control, and thoughtful software in a way that actually reduces friction. The haptics and Action Ring are smart additions for people who enjoy personalizing their devices according to their preferences.
This can be your shortcut engine when used properly. If you spend hours in front of your machine, switch between systems, or rely on keyboard-and-mouse choreography to get through heavy tasks, this mouse will pay for itself in reduced friction and saved time.
If you mostly scroll and type, save your money. The MX Master 4 is probably not a good option for you. I mean, it’s Brilliant, but brilliance that you don’t use is wasted.
However, Logitech tightened up an already excellent design and added features that reward real workflow use. For mouse enthusiasts and productivity pros, this is the kind of upgrade you’ll put on and immediately understand why it matters.
