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Logitech just did something unusual: it replaced the mouse that topped nearly every “best productivity mouse” list for two years. The Logitech MX Master 3S vs 4 question matters because the 3S wasn’t broken — it was the default recommendation for anyone who works at a desk all day. So the MX Master 4 has to justify why you’d pay more for it, and the answer isn’t as obvious as Logitech’s marketing suggests.
After comparing both mice across their real differences — haptics, connectivity, scrolling, and price — here’s what actually holds up. This guide breaks down what changed, who each mouse is for, and whether the new features are worth the premium. If you’re weighing other options too, see our guide to the best wireless mouse for laptop.
Quick Answer
The Logitech MX Master 4 is the better mouse — it adds haptic feedback, an Actions Ring, and 2x stronger wireless connectivity over the 3S. But the honest truth is the Logitech MX Master 3S is the better buy for most people: it shares the same sensor, ergonomics, and quiet clicks, and now costs less. Get the 4 only if haptics and the Actions Ring genuinely fit your workflow.
What Actually Changed From the 3S to the 4
The MX Master 4 keeps almost everything that made the 3S great and adds three genuinely new things on top.
The headline feature is haptic feedback. The 4 has a haptic sense panel that produces subtle vibrations tied to specific actions — switching desktops, adjusting sliders, hitting shortcuts, or battery reminders. You customize the intensity in Logi Options+. It’s the first MX Master mouse to include this.
Second is the Actions Ring — a customizable on-screen overlay you summon with a button press, giving you quick access to tools, filters, and app-specific commands at your cursor. Logitech claims it reduces repetitive movements by up to 63%.
Third is connectivity: the 4 has an advanced radio chip, optimized antenna placement, and a new USB-C dongle, delivering what Logitech calls 2x more powerful, more reliable wireless.
What most reviews won’t tell you is what didn’t change — and that’s the important part. The sensor, the ergonomic shape, the MagSpeed scroll wheel, and the quiet clicks are essentially carried over from the 3S. The 4 is an addition, not a reinvention.
What Stayed the Same
Here’s the counterintuitive part of this comparison: the similarities matter more than the differences for most buyers.
Both mice use the same 8K DPI Darkfield sensor that tracks on any surface, including glass. Both have the same MagSpeed electromagnetic scroll wheel that flips between ratcheted precision and free-spinning hyper-scroll — fast enough to fly through a 1,000-line spreadsheet in about a second. Both have Quiet Clicks with 90% less noise than the original MX Master. Both share the identical sculpted ergonomic shape with the thumb rest and gesture button.
In our experience, this is the deciding insight: if you already own and love a 3S, the 4 doesn’t change the core experience of using the mouse. Your hand won’t feel a difference. Your scrolling won’t feel different. The sensor performs identically.
A concrete scenario: a data analyst who spends the day scrolling massive spreadsheets and switching between windows gets the exact same scroll and tracking performance on both mice. For that person, the only question is whether haptics and the Actions Ring add enough to justify the price gap.
Comparison Table
| Feature | MX Master 3S | MX Master 4 |
|---|---|---|
| Sensor | 8K DPI Darkfield | 8K DPI Darkfield |
| Scroll | MagSpeed | MagSpeed (fastest tuning) |
| Quiet Clicks | Yes (90% quieter) | Yes (90% quieter) |
| Haptic feedback | No | Yes |
| Actions Ring | No | Yes |
| Connectivity | Bluetooth / Bolt | 2x stronger, new USB-C dongle |
| Charging | USB-C | USB-C |
| Price | ~$100 (often less now) | ~$120-130 |
Logitech MX Master 3S — Still the Value Champion (~$100)
The Logitech MX Master 3S remains one of the best productivity mice ever made, and the arrival of the 4 makes it a better deal, not a worse one. You get the 8K DPI Darkfield sensor, MagSpeed scrolling, Quiet Clicks, the superb ergonomic shape, multi-device Easy-Switch, and USB-C charging — everything that earned it near-universal recommendation.
With the 4 now on shelves, the 3S price has softened, which makes it the smart-money pick for anyone who doesn’t specifically want haptics.
Best for: Most people — anyone who wants flagship productivity mouse performance at the best price.
Real-world detail: The MagSpeed wheel alone justifies this mouse — flick it once and a 500-page PDF or a giant spreadsheet flies past in about a second, then re-engages precision mode when you slow down. That feature is identical on both mice.
Pros: Same sensor and scroll as the 4, excellent ergonomics, quiet clicks, now cheaper, proven reliability.
Cons: No haptic feedback, no Actions Ring, older wireless (still perfectly reliable for most).
Logitech MX Master 4 — The New Flagship (~$120-130)
The Logitech MX Master 4 is the mouse to get if the new features match how you work. The haptic feedback is genuinely novel — subtle vibrations that confirm actions and reduce the need to glance at the screen — and the Actions Ring puts app-specific commands at your cursor, which can be a real time-saver for editors, designers, and coders who live in shortcut-heavy apps.
The 2x stronger connectivity also matters in dense-signal environments. We found that in an office full of wireless devices, the more robust radio is a legitimate upgrade over the occasional micro-stutter some 3S users notice.
Best for: Power users in creative or shortcut-heavy apps, and anyone in a crowded wireless environment.
Real-world detail: The Actions Ring saves the most time for someone in Photoshop or a video editor — summoning tool presets at the cursor instead of traveling to a toolbar is where Logitech’s “63% fewer repetitive movements” claim actually shows up.
Pros: Haptic feedback, Actions Ring, 2x stronger connectivity, same great sensor and ergonomics, complimentary Adobe trial on some versions.
Cons: More expensive, haptics are niche for basic office use, no core performance gain over the 3S.
What to Look for When Choosing Between Them
1. Do you use shortcut-heavy apps? If you spend your day in Photoshop, Premiere, an IDE, or other tool-dense software, the Actions Ring and haptics on the 4 can genuinely speed you up. If you mostly use a browser, email, and spreadsheets, those features add little.
2. How’s your wireless environment? In a crowded office full of Bluetooth devices, the 4’s 2x stronger connectivity is a real benefit. At a home desk with few competing signals, the 3S connects just as reliably.
3. Your budget and the current price gap The 3S shares the sensor, scroll, and ergonomics with the 4 at a lower price. If the gap is $30+, ask whether haptics and the Actions Ring are worth it to you specifically — for many people, that money is better saved.
4. Do you already own a 3S? If you do, the 4 is not a meaningful upgrade to the core experience. The sensor, shape, and scrolling are the same. Upgrade only if you specifically want haptics or the Actions Ring, not for general performance.
FAQ
Is the Logitech MX Master 4 worth it over the 3S?
It’s worth it if you’ll use the new features — haptic feedback and the Actions Ring — which suit power users in shortcut-heavy creative apps. For general office work, browsing, and spreadsheets, the 3S delivers the same sensor, scrolling, and ergonomics for less money. Buy the 4 for the features, not for a performance jump, because the core experience is nearly identical.
What’s the main difference between the MX Master 3S and 4?
The main additions on the MX Master 4 are haptic feedback (subtle vibrations tied to actions), the Actions Ring (an on-screen command overlay), and 2x stronger wireless connectivity with a new USB-C dongle. The sensor, MagSpeed scroll wheel, quiet clicks, and ergonomic shape are essentially carried over unchanged from the 3S.
Should I upgrade from the MX Master 3S to the 4?
Probably not for performance reasons alone — the two mice feel identical in daily use because they share the sensor, shape, and scroll wheel. Upgrade only if haptic feedback or the Actions Ring specifically appeals to your workflow. If you’re happy with your 3S, your money is better kept.
Do both mice work on Mac and Windows?
Yes. Both the MX Master 3S and 4 work across Windows, macOS, Linux, and Chrome, with dedicated Mac versions available. Both use Logi Options+ software for customization, multi-device Easy-Switch, and USB-C charging. The 4 adds iPadOS support on its Mac-oriented versions.
Our Final Verdict
In the Logitech MX Master 3S vs 4 matchup, the MX Master 4 is the more capable mouse — haptic feedback, the Actions Ring, and stronger connectivity make it the new flagship, and it’s the right pick for power users in creative, shortcut-heavy apps. But for most people, the MX Master 3S is the smarter buy: identical sensor, scrolling, ergonomics, and quiet clicks at a lower price now that the 4 has launched. Decide based on whether haptics fit your workflow — not on the bigger number.
Check current pricing on Amazon and grab the one that matches how you actually work.