Logitech MX Master 3S Review

Verdict: A quiet, ultra‑precise productivity mouse that makes long desktop sessions and switching between machines noticeably easier — but it’s large, right‑hand‑only and not the best pick if you travel light.

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The quick answer

This is a desk-first mouse for serious productivity users: 8,000 DPI Darkfield tracking, near‑silent clicks and Logitech Flow for copying between up to three computers. It costs £69.99, and at that price you get deep per‑app customization and one of the best scroll wheels you can buy — buy if you sit at a desk all day, skip if you need a lightweight or ambidextrous travel mouse.

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What we tested

We evaluated the Bluetooth/USB‑C MX Master 3S (UK SKU) over three weeks on a 14‑inch MacBook Pro and a Windows 11 desktop in a mixed home-office/open‑office setup, using Logi Options+ for per‑app profiles and Flow to move the cursor and copy files between machines.

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What it does well

Precise tracking on any desk surface

The 8,000 DPI Darkfield sensor tracks on glass ≥4 mm and high‑resolution monitors without smoothing or lag, so pointer motion stays tight when you jump between displays or move quickly across the desk.

Near‑silent clicks that don’t feel dead

Logitech’s Quiet Clicks cut click sound power by about 90% (measured at 1 m) but keep a tactile feel, which reduces disruption in shared spaces while preserving accuracy when you click rapidly.

MagSpeed wheel makes long documents painless

The electromagnetic MagSpeed wheel offers precise ratchet stops and a free‑spin for rapid scrolling; it reliably shifts from line‑by‑line accuracy to fast paging, which saves time in long documents and spreadsheets.

Real multi‑computer workflow

FLOW lets you control up to three machines, move the cursor across screens and copy/paste files and text between them — not gimmickry, we used it to drag a screenshot from Windows to macOS in a single motion.

Battery life that you’ll mostly forget about

Logitech quotes up to 70 days per charge and a 1‑minute charge giving roughly 3 hours of use; in our testing a short top‑up delivered several hours immediately and full charges took about two hours.

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Where it falls short

Large, right‑hand‑only shape

The sculpted body and 141 g weight are great for desk comfort but make the mouse bulky and unsuitable for left‑handers or frequent commuters who need a pocketable option.

Real‑world battery varies

Logitech’s 70‑day claim is achievable with light use; heavy multi‑device workflows and constant scrolling will drop that significantly — expect to charge more often if you work long, intensive sessions every day.

Not every SKU includes Logi Bolt and software dependency

Some UK SKUs ship without the Logi Bolt receiver, and to access app‑specific buttons and FLOW you must install Logi Options+, which some IT departments resist on managed machines.

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How it compares

Closest competitor at this price: Microsoft Surface Precision Mouse. The MX Master 3S beats the Surface Precision for tracking on glass, quieter clicks, and the MagSpeed wheel’s free‑spin; choose it if you want the best multi‑computer workflow and quieter clicks. Pick the Surface Precision if you prefer a slightly smaller, symmetrical feel and tighter Windows integration — but for most desk‑based power users the MX Master 3S is the better all‑round productivity mouse.