Why this made the list
Most mice built to actually fit in a bag are cheap and feel like it. This one takes the sensor and build quality from Logitech's full-size MX Master line and puts it in a body small enough to travel with, without cutting the feature list down to almost nothing the way most compact mice do.
What it actually does
It uses a darkfield sensor rated from 200 to 4,000 DPI that tracks reliably on glass and other surfaces that trip up cheaper optical sensors. Logitech rates the battery at up to 70 days on a charge, topped up over USB-C. It connects over Bluetooth or Logitech's Bolt USB receiver, has six buttons, and uses Logitech's SmartShift scroll wheel, which free-spins for fast scrolling or clicks into ratcheted steps depending on how it's used. It weighs about 101 grams (3.56 oz).
Who this is actually for
Someone who travels or moves between a laptop and a desk setup regularly and wants a mouse that fits in a jacket pocket or laptop sleeve without feeling like a downgrade from a full-size mouse at the desk.
What to weigh before buying
- The compact shape that makes it portable also means less palm support than a full-size mouse. Long sessions may feel cramped for people with larger hands.
- 4,000 DPI is plenty for office work but low by gaming-mouse standards, this isn't built or marketed for gaming.
- The shape and side buttons are right-hand only, there's no left-handed version.
The verdict
A well-built compact mouse for anyone who actually needs the compact part, not just a smaller version of a desk mouse that never leaves the desk.