Logitech MX Master 4 Wireless Mouse
The MX Master 3S successor adds haptic feedback and a new Actions Ring overlay — a real upgrade for power users, but only if you'll actually use the haptics.
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What we like
- Haptic feedback gives tactile confirmation of macros, gestures, and app actions without looking up
- Actions Ring overlay puts app-specific shortcuts directly under your cursor
- 8K DPI sensor tracks reliably on glass and other tricky surfaces
- MagSpeed wheel still flips between ratcheted and free-spin scrolling instantly
- Quiet clicks (90% noise reduction) and sculpted ergonomics carry over from the 3S
Could be better
- $30 premium over the still-excellent MX Master 3S is hard to justify if you don't use macros
- Haptic motor adds a faint weight and slightly reduces battery life vs. the 3S
- Right-handed only — lefties are still stuck
- Actions Ring requires Logi Options+ and per-app setup to be useful
Full Review
The MX Master line has been the default productivity mouse recommendation for years, and the MX Master 4 is the first version that actually changes the formula. The shape is nearly identical to the 3S, the weight is within a few grams, and the button layout is unchanged. What’s new lives under the surface: a haptic motor, a redesigned 8K sensor, and a software layer called the Actions Ring.
Haptics: The Real Headline
The haptic feedback is subtle — closer to an Apple Trackpad click than a phone vibration. When you trigger a macro, switch desktops, or hit a gesture, the mouse gives a small confirming pulse under your palm. After a week of use, it stops feeling like a gimmick and starts feeling like the mouse is acknowledging you.
Whether that’s worth $30 depends entirely on how you work. If you live in shortcuts, gestures, and Logi Options+ macros across Photoshop, DaVinci, or Figma, the tactile confirmation removes a real friction point. If you mostly point and click in a browser, you’ll never notice it.
The Actions Ring
Press the thumb button and a radial menu pops up at your cursor with up to eight app-specific actions. In Premiere it can hold blade, ripple delete, and zoom controls. In Slack it can hold channel jumps. It’s genuinely useful, but it requires upfront configuration in Logi Options+ for every app you care about. Out of the box it’s underwhelming — invest 20 minutes per app and it earns its keep.
Sensor and Scroll
The new 8K sensor is a quiet upgrade. It tracks on glass desks, polished wood, and fabric mousepads without hesitation. The MagSpeed wheel is unchanged from the 3S, which is fine — it was already the best scroll wheel on any mouse. The horizontal thumb wheel also carries over, still excellent for timeline scrubbing.
MX Master 3S vs. MX Master 4
If you already own a 3S, the upgrade is hard to justify unless you’re a heavy macro user. The 3S is still on sale for around $90 and does 90% of what the 4 does. If you’re buying fresh and the $30 doesn’t sting, get the 4 — the haptics and Actions Ring are genuinely useful additions, not marketing fluff.
Who Should Buy This
Buy the MX Master 4 if you’re a creative pro, developer, or power user who lives in keyboard shortcuts and custom macros — the haptic confirmation and Actions Ring will earn back the price difference quickly. If you’re a casual user who mostly browses, emails, and writes documents, save $30 and get the MX Master 3S instead. Lefties should look at the Logitech MX Vertical or stick with the Lift line.
