The MX Master 3S is the mouse people recommend without thinking, which is exactly why it deserves a proper look. We have used one daily for over a year, across a Windows desktop, a MacBook and an iPad. This is what that experience looks like.
What it is
A large, right-handed wireless mouse aimed at office work and creative software. It connects over Bluetooth or Logitech’s Bolt USB receiver, pairs with three devices, charges over USB-C, and has seven programmable controls including a second scroll wheel under the thumb.
The scroll wheel is the whole story
Logitech calls it MagSpeed. In practice: scroll normally and the wheel clicks step by step. Flick it and it spins freely, silently, for several seconds. It switches between the two modes on its own based on how hard you flick. On long code files, log output, or a 3,000-row spreadsheet, it changes how you navigate. You stop reaching for the scrollbar or Page Down entirely.
We have used mice with mechanical free-spin wheels, including the cheaper M720. They work, but the manual toggle and the ratchet noise make them a compromise. The 3S wheel is the thing you will miss if you go back to any other mouse.
Shape and comfort
The 3S is sculpted for a right hand resting in a relaxed palm grip, with a thumb rest that puts the thumb wheel and two side buttons under your thumb without stretching. For medium and large hands it is one of the most comfortable mice made.
For small hands it is a problem. The body is tall and wide, and small-handed users end up with a claw grip and a stretched thumb. If your hand measures under 17 cm from middle fingertip to wrist, the MX Anywhere 3S is the better buy.
There is no left-handed version. Logitech’s answer for left-handers is the Lift vertical mouse, which is a different kind of mouse entirely.
Sensor and surfaces
The 8,000 DPI sensor tracks on glass, which sounds like a spec-sheet gimmick until you sit down at a glass conference table or a hotel desk with a lacquered top. It also handles the cloth mouse pad, the bare wooden desk and a notebook cover without changing its behaviour. Tracking is precise enough for image editing and UI design; it is not a gaming sensor and is not trying to be.
Clicks and noise
The 3S revision reduced click noise by roughly 90% compared with the MX Master 3. The clicks are now a soft tap rather than a snap. If you take calls with an open mic or share a room, this is a bigger deal than it sounds. The scroll wheel in ratchet mode still makes a faint tick.
Battery and charging
Logitech quotes 70 days on a full charge. Our experience is around six to eight weeks with daily use, which matches. Charging is USB-C and a minute of charging gives a few hours of use. You can use the mouse while it charges. There is no wireless charging, and the port is on the front, which is fine.
Connectivity and multi-device
The 3S pairs with three devices and switches between them with a button on the underside. Switching is near instant. With Logi Options+ installed on both computers, Flow lets you move the cursor off the edge of one screen onto the other computer and even copy-paste between them. It works better than it should.
Bluetooth has been reliable on the Mac and the iPad. On the Windows desktop we use the Bolt receiver, which has never dropped. Older Logitech Unifying receivers do not work with this mouse; Bolt is a different protocol.
Software
Logi Options+ lets you remap every button, set per-application profiles, and tune the scroll wheel. It is useful and mostly stays out of the way, though it is heavier than it needs to be and occasionally asks you to log in for no reason. The mouse works fully as a normal mouse without it.
What we would change
- Weight. At around 140 grams it is on the heavy side. You notice it after a lightweight mouse.
- Price. It is expensive for a mouse, and it goes on sale often enough that paying full price rarely makes sense.
- The thumb button. The gesture button under the thumb rest is awkward to press and most people disable it.
- No small or left-handed version. Logitech has the shape data; it would be nice to see the MX Master in an S size.
Who should buy it
- Anyone who works in long documents, code, spreadsheets or timelines and has a medium or large right hand.
- People switching between a laptop and a desktop all day.
- Designers and developers who want a precise, quiet mouse that tracks on anything.
Who should not
- Small-handed users: get the MX Anywhere 3S.
- Left-handers: get the Lift Left.
- Gamers: the sensor and weight are wrong for it; get a proper gaming mouse.
- Anyone on a tight budget: the M720 Triathlon gives you the multi-device and free-spin features for a third of the price.
Specifications
| Spec | MX Master 3S |
|---|---|
| Sensor | 8,000 DPI, works on glass |
| Connection | Bluetooth Low Energy, Logi Bolt receiver |
| Devices | 3, with Easy-Switch button |
| Battery | Rechargeable, up to 70 days, USB-C |
| Buttons | 7 programmable |
| Weight | ~141 g |
| Handedness | Right only |
Where to buy
Check the MX Master 3S price on Amazon ↗See how it compares with the alternatives in our guide to the best wireless mice for productivity.