Pros & Cons
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- Remarkable comfort and battery life
- Perfectly precise electromagnetic scroll wheel
- Ultra-customizable for different apps
- Works with multiple devices and operating systems
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- Lefties need not apply
- No place to store the USB dongle
- Fans of tactile clicks may prefer the older version
Logitech MX Master 3S Wireless Mouse Specs
| Hand Orientation | Right-Handed |
| Interface | Bluetooth |
| Interface | RF Wireless |
| Number of Buttons | 8 |
| Power Source | Internal Battery |
| Sensor Maker and Model | Logitech Darkfield |
| Sensor Maximum Resolution | 8000 |
| Warranty (Parts and Labor) | 1 |
| Weight | 5 |
A hundred bucks is a lot to spend on a mouse, but since its debut in September 2019, Logitech's MX Master 3 has ruled our rankings with unbeatable comfort and cordless productivity. The new MX Master 3S ($99.99) doesn't reinvent the wheel—either of them—but it brings higher sensitivity and quieter clicks. It remains the best mouse you can buy for general use, and our Editors' Choice favorite among mainstream mice.
Three Colors, Softer Clicks
Though its curvaceous shape is strictly for right-handers, the MX Master 3S isn't officially an ergonomic mouse like Logitech's MX Vertical. Nor is it a fast-twitch gaming mouse with sky-high 16,000 dots per inch (dpi) resolution, though its all-terrain Darkfield sensor has been boosted from 4,000dpi to 8,000dpi—more than enough for making fast moves across a large 4K monitor, or multiple monitors.
(Photo: Molly Flores)Instead, the 5-ounce wireless mouse—available in pale gray, darker graphite, or black, and made with 22% or 27% recycled plastic depending on which color you choose—emphasizes productivity and versatility. The latter comes from the more-or-less endless array of shortcuts and customization options offered by its Logi Options+ software (more about it in a moment) and its electromagnetic scroll wheel, which increases or decreases resistance based on your scrolling speed or pressure. A small button below the wheel toggles between precise and free-wheeling scrolling, but you can accomplish the same thing with careful movement or a flick of your finger.
That's not the only scroll wheel. In addition to the clickable chrome wheel, the main left and right buttons, and the top button, there's a wide horizontal scroll wheel on the left side, guided by your right thumb. Below it are two thin buttons that default to forward and back navigation in your browser, and below them is a curved wing or running board or thumb rest that helps cradle your hand in a slightly tilted position. A small line (like a raised hyphen) on the wing indicates a gesture button that adds four more functions if you press down with your thumb and move the mouse up, down, left, or right.
(Photo: Molly Flores)Besides the sharper sensor, the only other change to the MX Master 3S is that the primary clicks are now nearly silent—90% quieter, according to Logitech, and hard to hear unless you lower your ear to the mouse. The buttons also have a softer feel, so if you like a firm tactile response you may actually prefer the still-on-sale MX Master 3, but I found them perfectly pleasant.
You Won't Want to Let Go
The mouse's size is unchanged at 4.9 by 3.3 by 2 inches, and it feels natural and ultra-comfortable within seconds of resting your hand on it. I found I had to move or press my thumb more deliberately or consciously than I expected to activate the gesture button, but the side buttons and scroll wheels fell readily to hand.
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The MX Master 3S also sets a high bar for wireless convenience. It uses either a low-power Bluetooth connection or the included Logi Bolt USB receiver. The latter plugs into (and barely sticks out of) a Type-A USB port to provide a 2.4GHz link that, like Logitech's older Unifying receiver, also works with one of the company's MX keyboards.
(Photo: Molly Flores)A button on the mouse's bottom lets you switch among up to three devices with different Bluetooth or USB connections, and Logitech's Flow technology even lets you move the mouse from one screen to another (from a Windows desktop to a Mac laptop, say) and copy and paste between systems. One minor gripe: The 3S has no place to stash or carry the receiver if you're packing for travel.
For charging, there's a USB Type-C port on the mouse's nose and a USB-C-to-A cable in the box. The company says plugging in for one minute provides enough power for three hours' use, and a full charge lasts up to 70 days, though from keeping an eye on the Options+ battery gauge, I suspect full-time users will need to plug in every 15 to 20 days. (An environmental thumbs-up to Logitech for using an internal battery instead of disposable AAs.)
Speaking of Options+, it offers nearly limitless customization, letting you remap buttons or use the side scroller to move through browser tabs.
(Credit: Logitech)It also supports different button assignments for different applications such as Adobe Photoshop and Premiere, the Microsoft Office suite, and the Edge browser, offering as many preset or personal combinations as you could wish.