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Your mouse can be paired with up to three different computers using the easy switch button to change the channel.
The speed-adaptive scroll wheel shifts between two scrolling modes automatically. As you scroll faster, it will automatically shift from line-by-line scrolling to free-spinning.
You can also manually switch between modes by pressing the mode shift button.
By default, mode shift is assigned to the button on top of the mouse.
In the Logitech Options+ Software, you can decide to disable smart-shift if you prefer to stay in a single scrolling mode and always shift manually. You can also adjust the smartshift sensitivity, which will change the speed required to automatically shift into free spinning.
Scroll side to side effortlessly with a stroke of your thumb.
Install Logitech Options+ software to extend thumb wheel capabilities and more:
Install Logitech Options + software to enable gestures.
Gesture Button | Windows 10 | Mac OS | ||
Single press | ![]() | Task View | ![]() | Mission Control |
Hold and move down | ![]() | Start Menu | ![]() | Mission Control |
Hold and move up | ![]() | Show/hide desktop | ![]() | App Expose |
Hold and move right | ![]() | Switch between desktops | ![]() | Switch between desktops |
Hold and move left | ![]() | Switch between desktops | ![]() | Switch between desktops |
You can use gestures for desktop navigation, app management, pan and more. You can assign up to five different actions to the Gesture button. Or map gestures to other MX Master 3S buttons, including the middle button or manual shift button.
Conveniently located, the back and forward buttons enhance navigation and simplify tasks.
To move back and forward:
NOTE: On the Mac, enabling the back/forward buttons requires installation of Logitech Options+ software.
Install Logitech Options+ software to unlock new capabilities for the back/forward buttons
In addition to enabling the buttons for use with Macs, Logitech Options+ software lets you map other useful functions to the buttons, including undo/redo, OS navigation, zoom, volume up/down, and more.
Install Logitech Options+ software to enable the new capabilities of the Darkfield 8000 DPI Sensor
By default, the MX Master 3S has a 1000 DPI configuration
In the Logitech Options+ Software, you can extend the sensor range to up to 8000 DPI.
Enabling this option will allow you to work faster and more precisely, allowing you to adjust the pointer speed to match high resolution monitors.
Your mouse buttons can be assigned to perform different functions for different applications. For instance, you can assign the thumb wheel to do horizontal scrolling in Microsoft Excel and zoom in Microsoft PowerPoint.
When installing Logitech options+, you will have the possibility to install predefined app-specific settings that will adapt the mouse button behavior to be optimized in selected applications.
Here are the app specific settings we have created for you:
1 | 2 | 3 | |
Default settings | Middle Button | Horizontal scroll | Back / Forward |
Browser (Chrome, Edge, Safari) | Open link in a new tab | Switch between tabs | Back / Forward |
Microsoft Exce | Pan (Hold and move the mouse) | Horizontal scroll | Undo / Redo |
Microsoft Word | Pan (Hold and move the mouse) | Zoom | Undo / Redo |
Microsoft PowerPoint | Pan (Hold and move the mouse) | Zoom | Undo / Redo |
Adobe Photoshop | Pan (Hold and move the mouse) | Brush size | Undo / Redo |
Adobe Premiere Pro | Pan (Hold and move the mouse) | Horizontal timeline navigation | Undo / Redo |
Apple Final Cut Pro | Pan (Hold and move the mouse) | Horizontal timeline navigation | Undo / Redo |
With these settings, the Gesture button and the wheel mode-shift button are keeping the same functionality across all applications.
Each of these settings can be customized manually, for any application.
Work on multiple computers with a single MX Master 3S.
With Logitech Flow, you can use the mouse cursor to move from one computer to the next. You can even copy and paste between computers, and if you have a compatible Logitech Keyboard, such as MX Mechanical, the keyboard will follow the mouse and switch computers at the same time.
A minimum of minutes charging gives you enough power for a full day of use. Depending on how you use the mouse, a full charge can last up to 70 days*.
* Battery life may vary depending on user and operating conditions.
Three LED light on the side of the mouse indicate battery status.
Install Logi Options+ software to receive battery status notifications, including low-charge warnings.
LED Color | Indications |
Green | From 100% to 10% charge |
Red | 10% charge or below |
Pulsing green | While charging |
To clean your MX Master 3S, you can use a ratio of 70% Isopropyl alcohol to 30% water, as found in common cleaning solutions.
Other alcohols cause damage, and bleach is not recommended by the CDC.
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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