Logitech MX Anywhere 3S Mouse Review (2026): The Compact

Why you should trust this review

I bought the MX Anywhere 3S myself and used it daily for eight months as my travel and secondary mouse. Logitech had no involvement in this review. I have used the full-size MX Master line as well, so I can tell you exactly what you keep and what you trade by going compact, rather than reviewing the small mouse in a vacuum.

The honest question with a premium compact mouse is whether it is worth more than a cheap wireless mouse and whether the smaller size suits your hand. My job is to answer both from real daily use across desks, cafes, and travel.

How we evaluated

I used the MX Anywhere 3S for eight months across a laptop and a desktop, switching between them with multi-device pairing, and carried it in a bag for travel. I evaluated the MagSpeed scroll wheel in both modes, the sensor’s performance on various surfaces including glass, the reliability of multi-device switching, the battery life between charges, the build quality, and how the compact size felt during long sessions. I also lived with the stock button mapping, which is worth flagging.

MagSpeed scroll wheel

The MagSpeed electromagnetic scroll wheel is the standout feature carried down from the MX Master line, and it earns its reputation. It transitions between a precise ratchet mode for line-by-line scrolling and a free-spinning mode that flies through long documents and web pages with a single flick. In daily work, blowing through a thousand-line spreadsheet or a long article without repeated finger drags is genuinely faster, and the wheel can switch modes automatically based on how hard you spin. For anyone who scrolls a lot, this alone separates the 3S from ordinary mice.

Sensor and surface flexibility

The 8000 DPI Darkfield sensor tracks well everywhere, including on glass, which is the surface that defeats most mice. In eight months I never found a desk, table, or cafe surface it could not handle, which is exactly what you want from a mouse you take on the road. The tracking is precise and consistent, and the high DPI ceiling means it keeps up on high-resolution displays without feeling sluggish. For a travel mouse that has to work on whatever surface you encounter, the sensor is a real strength.

Multi-device pairing and battery

The multi-device support pairs up to three devices over Bluetooth and Logi Bolt, and switching between my laptop and desktop was seamless across eight months. The battery is the other quiet win: Logitech rates it around 70 days per charge, and in practice I charged it rarely, which is ideal for a device you do not want to think about while traveling. It recharges over USB-C, so you top it up with the same cable as everything else, and a quick charge gets you going again fast.

Build, size, and the button caveat

The build quality is solid and premium-feeling, the kind of mouse that holds up to being tossed in a bag. The honest trade-off is size: this is a compact mouse, and for large hands it can feel small over long sessions, since your palm does not rest as fully as it would on the full-size MX Master. If you have big hands and use a mouse all day at a desk, the larger MX Master is the better fit. The other small caveat is that the stock thumb buttons benefit from remapping in Logitech’s software to get the most out of them, so plan a few minutes of setup.

Who should buy the MX Anywhere 3S?

Buy it if you are a power user who travels or wants a high-quality secondary mouse, you value the MagSpeed scroll and multi-device switching, and you have small to medium hands. The sensor’s surface flexibility and the 70-day battery make it an excellent portable productivity tool that justifies its price.

Skip it if you have large hands and use a mouse all day at a desk, where the full-size MX Master 3S is more comfortable, or if you just need a basic mouse and do not care about MagSpeed, glass tracking, or multi-device pairing. A cheap wireless mouse covers casual use for far less.

The verdict

The Logitech MX Anywhere 3S is the compact travel mouse I recommend for power users, and eight months of daily use confirm it. The MagSpeed scroll wheel brings the best feature of the MX Master line to a smaller body, the 8000 DPI Darkfield sensor tracks reliably on every surface including glass, multi-device pairing makes switching between machines effortless, and a charge lasts about 70 days. The build is premium and travel-ready. The honest trade-offs are the price, which adds up next to budget mice, the compact size that does not suit large hands over long sessions, and the stock buttons that want remapping. If you have big hands or only need basic functionality, look elsewhere. But for portable, high-quality productivity, the 3S is the right pick and a clear top compact mouse.