Introduction
Welcome to the instruction manual for your Logitech M705 Marathon Wireless Laser Mouse. This guide provides detailed information on setting up, operating, maintaining, and troubleshooting your device to ensure optimal performance and longevity. The M705 mouse is designed for comfort and efficiency, featuring a long battery life, hyper-fast scrolling, and customizable buttons.
What's in the Box
- Logitech Marathon Mouse M705
- Logitech Unifying receiver
- Quick-start guide
- 2 AA Batteries

Image: The contents of the Logitech M705 Marathon Wireless Laser Mouse package, showing the mouse, the small Logitech Unifying receiver, and two AA batteries.
Setup Guide
1. Battery Installation
Your Logitech M705 mouse requires two AA batteries, which are included. To install them:
- Locate the battery compartment on the underside of the mouse.
- Slide the battery compartment cover open.
- Insert the two AA batteries, ensuring the positive (+) and negative (-) terminals align correctly with the indicators inside the compartment.
- Close the battery compartment cover until it clicks securely into place.
2. Connecting the Unifying Receiver
The Logitech Unifying receiver provides a reliable 2.4 GHz wireless connection.
- Remove the tiny Unifying receiver from its storage slot, usually located inside the battery compartment or near it.
- Plug the Unifying receiver into an available USB port on your computer (PC or Mac).

Image: The Logitech M705 mouse positioned next to a laptop, illustrating the wireless connection via the Unifying receiver plugged into the laptop's USB port.
3. Initial Pairing
The mouse should automatically connect to the Unifying receiver once it's plugged in and the mouse is powered on. If the connection is not established:
- Ensure the mouse is turned on (check the power switch on the underside).
- Try plugging the Unifying receiver into a different USB port.
- Download and install the Logitech Unifying Software from the official Logitech website to manually pair the mouse if necessary.
Operating Instructions
Basic Functions
The M705 mouse offers standard left and right-click functionality, along with a scroll wheel for vertical navigation. The scroll wheel also functions as a middle button when pressed.

Image: A top-down view of the Logitech M705 mouse, clearly showing the main left and right click buttons, the scroll wheel, and the small button below the scroll wheel.
Hyper-Fast Scrolling
The M705 features a dual-mode scroll wheel. You can switch between two modes:
- Hyper-fast scrolling: Spin the wheel freely to fly through long documents and web pages.
- Click-to-click scrolling: For precise navigation, ideal for lists or image galleries.
Press the button located directly below the scroll wheel to toggle between these two modes.

Image: A user's hand comfortably resting on the Logitech M705 mouse, illustrating the ergonomic design and the ease of using the hyper-fast scroll wheel.
Customizable Buttons
The M705 mouse includes additional buttons that can be customized for various functions, such as navigating web pages (forward/backward) or launching applications. These are typically located on the thumb side of the mouse.
To customize these buttons, download and install the Logitech Options software from the official Logitech website. This software allows you to assign specific actions to each programmable button, enhancing your workflow.

Image: A visual representation of the Logitech Options software interface, demonstrating how users can customize the buttons on their M705 Marathon Wireless Mouse.
Laser Tracking
The M705 utilizes laser tracking technology, providing precise and smooth cursor control on a variety of surfaces. For optimal performance, use the mouse on a clean, non-reflective surface.
Maintenance and Care
Cleaning
To maintain the performance and appearance of your mouse:
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution.
- Avoid using harsh chemicals, abrasive cleaners, or solvents, as these can damage the mouse's surface.
- Regularly clean the optical sensor area on the underside of the mouse to ensure accurate tracking.
Battery Replacement
The Logitech M705 is designed for an extended battery life of up to three years. When the battery indicator light (if present) signals low power, or if you notice a decrease in performance:
- Replace the two AA batteries following the installation steps outlined in the Setup Guide.
- Dispose of old batteries responsibly according to local regulations.
Troubleshooting
Connection Issues
- No connection: Ensure the Unifying receiver is securely plugged into a working USB port. Try a different USB port.
- Intermittent connection: Move the mouse closer to the Unifying receiver. Avoid placing the receiver near other electrical devices that might cause interference (e.g., speakers, monitors).
- Re-pairing: If the mouse loses connection, use the Logitech Unifying Software to re-pair the mouse with its receiver.
Cursor Not Moving or Erratic
- Check batteries: Ensure batteries are correctly installed and have sufficient charge. Replace them if necessary.
- Clean sensor: Inspect the laser sensor on the underside of the mouse for any dust or debris and clean it gently with a soft cloth.
- Surface: Try using the mouse on a different surface. Highly reflective or transparent surfaces may affect laser tracking.
Buttons Not Responding
- Software conflict: If you have customization software installed, ensure it is up-to-date and not conflicting with other applications.
- Reset settings: In Logitech Options software, try restoring default button settings to see if the issue resolves.
Product Specifications

Image: A detailed diagram of the Logitech M705 mouse, showing its dimensions (length, width, height) and labeling key features such as hyperfast scrolling, tilt wheel, customizable buttons, battery indicator light, and soft side grips.
| Feature | Detail |
|---|---|
| Model Number | M705 |
| Connectivity Technology | Wireless (2.4 GHz with Unifying Receiver) |
| Movement Detection Technology | Laser |
| Product Dimensions | 1.6 x 4.3 x 2.6 inches (41 x 109 x 66 mm) |
| Item Weight | 4.8 ounces (136 grams) |
| Batteries | 2 AA batteries (included) |
| Battery Life | Up to 3 years (may vary based on usage) |
| Color | Black / Silver |
| Compatibility | Windows XP, Windows Vista, Windows 7, OS X 10.4 or later, Chrome OS |
Warranty and Support
Limited Hardware Warranty
Logitech provides a limited hardware warranty for the M705 Marathon Wireless Laser Mouse. Please refer to the warranty information included with your product packaging or visit the official Logitech website for the most current and detailed warranty terms and conditions applicable to your region.
Customer Support
For further assistance, technical support, or to download the latest software and drivers, please visit the official Logitech support website:
You can also find FAQs, troubleshooting guides, and community forums on their website.







