Introduction
The Logitech Pebble Mouse 2 M350s is a slim, silent wireless mouse designed for portability and multi-device use. It offers a quiet clicking experience, versatile connectivity, and a customizable middle button. This manual will guide you through the setup, operation, and maintenance of your new mouse.

Image: The Logitech Pebble Mouse 2 M350s in Off-White, showcasing its compact and ergonomic design.
Package Contents
- Logitech Pebble Mouse 2 M350s
- 1 AA Battery (pre-installed)
- Quick Start Guide
Setup
1. Install Battery
Your Pebble Mouse 2 M350s comes with one AA battery pre-installed. If you need to replace it, gently slide the top cover off the mouse. Insert a new AA battery, ensuring correct polarity, then reattach the cover. The mouse has an estimated battery life of 24 months.

Image: The underside of the Pebble Mouse 2 M350s, illustrating the battery compartment and power switch.
2. Connect Your Mouse
The Pebble Mouse 2 M350s supports two wireless connection methods: Bluetooth Low Energy and Logi Bolt USB receiver (sold separately).
- Bluetooth Connection:
- Turn on the mouse using the switch on the bottom.
- Press and hold the Easy-Switch button on the bottom of the mouse for 3 seconds until the LED light starts blinking rapidly, indicating pairing mode.
- On your device (computer, tablet, or smartphone), open Bluetooth settings and select "Pebble Mouse 2 M350s" from the list of available devices.
- Follow any on-screen prompts to complete the pairing. The LED will glow solid for 5 seconds when connected.
- Logi Bolt Connection (Receiver Sold Separately):
- Plug the Logi Bolt USB receiver into an available USB port on your computer.
- Turn on the mouse using the switch on the bottom.
- The mouse should automatically connect to the Logi Bolt receiver. If not, use the Logi Options+ software to establish the connection.
Note: The Logi Bolt receiver provides a secure and stable connection, especially in congested wireless environments. Unifying receivers are not compatible with this mouse.

Image: The Pebble Mouse 2 M350s in use with a laptop, demonstrating its wireless connectivity.
Operating Instructions
Basic Functions
- Left Click: Primary selection and activation.
- Right Click: Accesses contextual menus.
- Scroll Wheel: Scrolls through documents and web pages. The scroll wheel also functions as a middle click button.
Easy-Switch for Multi-Device Control
The Pebble Mouse 2 M350s features Easy-Switch technology, allowing you to seamlessly switch between up to three connected devices with a single button press. The Easy-Switch button is located on the bottom of the mouse.
- Pair your mouse with up to three different devices using the Bluetooth connection method described above, assigning each to a different channel (1, 2, or 3).
- To switch between devices, simply press the Easy-Switch button. The LED indicator will show which channel is currently active.

Image: The Pebble Mouse 2 M350s demonstrating its Easy-Switch capability, allowing seamless transitions between a desktop monitor and a tablet.
Customizing the Middle Button with Logi Options+
Enhance your workflow by customizing the middle button (scroll wheel click) using the Logi Options+ software. This free application allows you to assign various functions to the button, such as opening applications, executing shortcuts, or performing gestures.
- Download Logi Options+ from the official Logitech website.
- Install the software and follow the on-screen instructions to detect your mouse.
- Select your Pebble Mouse 2 M350s and navigate to the customization settings to reassign the middle button's function.

Image: A user customizing the functions of the Pebble Mouse 2 M350s using the Logi Options+ software on a laptop.
DPI Adjustment
The mouse features an adjustable tracking precision from 400 to 4000 DPI, allowing for precise cursor control. DPI settings can be adjusted via the Logi Options+ software to suit your preferences and tasks.
Maintenance
Cleaning Your Mouse
To maintain optimal performance, periodically clean your mouse. Use a soft, lint-free cloth lightly dampened with water or an alcohol-based cleaner. Avoid harsh chemicals or abrasive materials. Ensure no liquid enters the mouse's internal components.
Battery Replacement
When the battery indicator light on the mouse begins to flash red, it's time to replace the AA battery. Follow the instructions in the "Install Battery" section under Setup.
Troubleshooting
- Mouse Not Responding:
- Check if the mouse is powered on.
- Ensure the battery is correctly installed and not depleted. Replace if necessary.
- Verify that the mouse is paired with your device via Bluetooth or connected via the Logi Bolt receiver.
- Try re-pairing the mouse with your device.
- Intermittent Connection or Lag:
- Move the mouse closer to your device.
- Avoid using the mouse on metallic surfaces, which can interfere with wireless signals.
- If using Bluetooth, try connecting via a Logi Bolt receiver (sold separately) for a more stable connection, especially in environments with many wireless devices.
- Ensure your device's Bluetooth drivers are up to date.
- Cursor Movement Issues:
- Clean the optical sensor on the bottom of the mouse.
- Use the mouse on a clean, non-reflective surface or a mouse pad.
- Adjust the DPI settings using Logi Options+ software.
- Easy-Switch Not Working:
- Ensure the mouse is successfully paired with all desired devices on different channels.
- Press the Easy-Switch button firmly to cycle through the channels.
Specifications
| Model Number | M350sOW |
| Connectivity | Bluetooth Low Energy, Logi Bolt (receiver sold separately) |
| Sensor Technology | Optical Tracking |
| DPI Range | 400 - 4000 dpi |
| Number of Buttons | 3 (Left/Right click, Middle click/Scroll wheel) |
| Battery Type | 1 x AA battery |
| Battery Life | Up to 24 months |
| Dimensions (L x W x H) | 10.67 x 5.87 x 2.66 cm |
| Weight | 76 g (with battery) |
| Operating System Compatibility | Windows 10, 11 or later; macOS 11 or later; iPadOS 14 or later; Android OS 9.0 or later; Chrome OS |
Warranty and Support
Warranty Information
Your Logitech Pebble Mouse 2 M350s comes with a 2-year limited hardware warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. For full terms and conditions, please refer to the warranty documentation included with your product or visit the official Logitech website.
Customer Support
For further assistance, technical support, or to download the Logi Options+ software, please visit the official Logitech support website:
You can also find FAQs and community forums on the support page.