MX Master 3 - Mouse LOGITECH - Free user manual and instructions

Product Type	Wireless Mouse
Brand	Logitech
Model	MX Master 3
Dimensions (H x W x D)	4.5 x 3.3 x 2.0 in (114 x 84 x 51 mm)
Weight	141 g (4.97 oz)
Power Source	Rechargeable Li-Po battery (500 mAh) via USB-C
Battery Life	Up to 70 days (full charge), 3 hours charge for full day use
Connectivity	Bluetooth Low Energy, Logitech Unifying USB Receiver
Sensor	Darkfield Laser Sensor (4000 DPI)
Buttons	7 programmable buttons including gesture button
Scroll Wheel	MagSpeed Electromagnetic Scroll Wheel with SmartShift (ratchet/free-spin), horizontal scroll wheel
Operating Systems	Windows 10/11, macOS, Linux, Chrome OS, iPadOS
Software	Logitech Options (or Logi Options+) for customization
Maintenance & Cleaning	Wipe with a soft, dry cloth. Do not use liquids or solvents.
Safety	Use only provided USB cable and charger. Do not expose to moisture.
Spare Parts & Repairability	Replacement USB receiver (Logitech Unifying), USB-C cable. User-replaceable battery (soldered, professional replacement recommended).
General Information	Ergonomic design for right-handed users, USB-C to USB-A cable included, 1-year limited warranty.

Frequently Asked Questions - MX Master 3 LOGITECH

How do I pair the MX Master 3 with my computer via Bluetooth?

Press and hold the Easy-Switch button on the bottom of the mouse to enter pairing mode (LED flashes). Then select 'MX Master 3' in your computer's Bluetooth settings. Alternatively, use the Logitech Unifying receiver by plugging it in.

How long does the battery last and how do I charge it?

The battery lasts up to 70 days on a full charge. Charge via the USB-C port on the front of the mouse. A 3-minute charge provides enough power for an entire day of use.

Can I use the mouse while it is charging?

Yes, the MX Master 3 supports pass-through use while charging via USB-C.

How do I customize the button functions?

Download and install Logitech Options (or Logi Options+) from the Logitech website. The software allows you to remap all 7 buttons, adjust pointer speed, and configure app-specific settings.

What is the difference between the standard scroll wheel and the MagSpeed scroll?

The MagSpeed scroll wheel uses electromagnets to toggle between ratchet (precise, stepped scrolling) and free-spin (ultra-fast, nearly frictionless) modes automatically, or manually via the SmartShift switch.

Is the MX Master 3 compatible with my operating system?

It is compatible with Windows 10/11, macOS, Linux, Chrome OS, and iPadOS. Basic functions work without software, but customization requires Logitech Options.

How do I clean the mouse properly?

Use a soft, lint-free cloth slightly dampened with water or a mild cleaner. Do not spray liquid directly on the mouse. Avoid using alcohol or abrasive cleaners. Clean the sensor gently with a dry cotton swab.

Can I connect the mouse to two computers at the same time?

Yes, via the Easy-Switch button you can pair up to three devices (Bluetooth or Unifying) and switch between them instantly. For seamless flow across computers, use Logitech Flow software.

What is the warranty period for the MX Master 3?

Logitech offers a 1-year limited hardware warranty. Extended warranty options may be available depending on your region. Keep your proof of purchase.

How do I perform a reset or factory reset on the mouse?

Press and hold the middle button + gesture button for 3 seconds, then release. The mouse will turn off. Turn it back on to complete the reset. Alternatively, use Logitech Options to 'Set to defaults'.

USER MANUAL MX Master 3 LOGITECH

1. Make sure the mouse is turned on — the number 1 LED on the bottom of the mouse should blink quickly.

NOTE: If the LED is not blinking quickly, perform a long press (three seconds).

1. Choose how you want to connect:

• Use the included wireless USB receiver

Plug the receiver into a USB port on your computer

- Connect directly using Bluetooth

Open the Bluetooth settings on your computer to complete the pairing. Click here for more details on how to do this on your computer. If you experience issues with Bluetooth, click here for Bluetooth troubleshooting.

1. Install Logitech Options Software.

Download Logitech Options to use all the possibilities this mouse offers. To download and learn more about Logitech Options, go to logitech.com/options.

LEARN MORE ABOUT YOUR PRODUCT

Product Overview

1 - MagSpeed scroll wheel 6 - USB-C charging port 2 - Mode shift button for the scroll wheel 7 - On/Off button 3 - Gesture button 8 – Darkfield 4000DPI sensor 4 - Thumb wheel 9 – Easy-Switch & connect button 5 – Battery status LED 10 - Back/forward buttons

Pair to a second computer with Easy-Switch

Your mouse can be paired with up to three different computers using the easy-switch button to change the channel.

1. A short press on the Easy-Switch button lets you switch channels. Select the channel you want and go to the next step.
2. Press and hold the Easy-Switch button for three seconds. This puts the mouse in discoverable mode so that it can be seen by your computer. The LED will start blinking quickly.
3. Choose how you want to connect the keyboard to your computer:

- Bluetooth: Open the Bluetooth settings on your computer to complete the pairing. You can find more details here.

- USB receiver: Plug the receiver to a USB port and open Logitech Options. In Options, select Add devices > Setup Unifying device, and follow the instructions.

MagSpeed adaptive scroll-wheel

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.

• Line-by-line (ratchet) mode — ideal for precise navigation of items and lists. - Hyper-fast (free-spin) mode — near-frictionless spinning, letting you fly through long documents and web pages.

Switch modes manually

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. Use the Logitech Options Software, to disable SmartShift if you prefer to stay in a single scrolling mode and shift manually. You can also adjust the SmartShift sensitivity, which will change the speed required to automatically shift into free spinning.

Thumb wheel

Scroll side to side effortlessly with a stroke of your thumb.

Install Logitech Options software to extend thumb wheel capabilities:

• Adjust thumbwheel scrolling speed, and direction
• Enable app-specific settings for the thumbwheel:

• Zoom in Microsoft Word and PowerPoint • Adjust brush size in Adobe Photoshop • Navigate your timeline in Adobe Premiere Pro • Switch between tabs in the browser • Adjust volume • Assign custom keystrokes to the wheel rotation (up and down)

Gesture Button

Install Logitech Options software to enable gestures.

To use the Gesture button:

Hold down the Gesture button while moving the mouse left, right, up, or down.

Gesture Button		Windows 10		Mac OS
Single press	O	Task View	O	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 more left	←	Switch between desktops	←	Switch between desktops

You can use gestures for desktop navigation, app management, pan, zoom, and more. You can assign up to five different actions to the Gesture button. Or map gestures to other MX Master buttons, including the middle button or manual shift button.

Back/Forward buttons

Conveniently located, the back and forward buttons enhance navigation and simplify tasks.

To move back and forward:

- Press the back or forward button to navigate web or document pages, depending on the location of the mouse pointer.

NOTE: On the Mac, enabling of 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.

App-Specific Settings

Your mouse buttons can be assigned to perform different functions for different applications. For example, you can assign the thumb wheel to do horizontal scrolling in Microsoft Excel and zoom in Microsoft PowerPoint.

With Logitech Options, you can install predefined app-specific settings that adapt the mouse button behavior to be optimized in selected applications.

The following app-specific settings have been created for you:

	1	2	3
Default settings Browser (Chrome, Edge, Safari)	Middle ButtonOpen link in a new tabPan	Horizontal scrollSwitch between tabs	Back / ForwardBack / Forward
Microsoft Excel	(Hold and move the mouse)Pan	Horizontal scroll	Undo / Redo
Microsoft Word	(Hold and move the mouse)	Zoom	Undo / Redo
	Pan
Microsoft PowerPoint	(Hold and move the mouse)Pan	Zoom	Undo / Redo
Adobe Photoshop	(Hold and move the mouse)Pan	Brush size	Undo / Redo
Adobe Premiere Pro	(Hold and move the mouse)Pan	Horizontal timeline navigation	Undo / Redo
Apple Final Cut Pro	(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.

Flow

With Logitech Flow, you can work on multiple computers with a single MX Master 3.

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 Keys, the keyboard will follow the mouse and switch computers at the same time.

You will need to install Logitech Options software on both computers and follow these instructions.

Battery

Charge mouse battery:

Connect one end of the provided charging cable to the USB-C port on the mouse and the other end to a USB power source.

A minimum of 3 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.

NOTE: Battery life may vary depending on user and operating conditions.

Check mouse battery status:

Three LED lights on the side of the mouse indicate battery status.

Install Logitech Options software to receive battery status notifications, including low-charge warnings.

LED Color

Green

Red

Pulsing green

Indications

From 100% to 10% charge

10% charge or below

While charging