The MX Master 3S updates the 2019 classic with quieter clicks, a higher-DPI sensor, and USB-C charging. The ergonomics remain the same.

Quiet clicks

Laser quiet switches keep the noise under 30 dB. On a 40-person team call, no one can hear clicking.

Sensor

8000 DPI tracks on glass up to 4 mm thick. I tested on an IKEA glass desk and it worked, which is rare.

Scroll wheel

MagSpeed electromagnetic scroll is the defining feature. It flips from ratcheted to freewheel in under 0.1 seconds. Navigating long spreadsheets is genuinely faster.

Side thumb wheel and gesture button

Horizontal scrolling in Excel and Google Sheets is accurate. The gesture button is configurable but awkward to reach with small hands.

Battery and connectivity

USB-C charges in three minutes for a full day. Bluetooth and Logi Bolt receiver both work.

Verdict

Best mouse for productivity. Buy it if you use a packaged app like Excel, Figma, or PowerPoint.