Introduction
This manual provides comprehensive instructions for the ICOMTOFIT M-ONE Bluetooth Headset. Designed for clear communication in various environments, this headset features dual-mic noise canceling, Bluetooth V5.3 connectivity, and multi-device support. Please read this manual thoroughly to ensure proper use and optimal performance of your device.
Package Contents
Verify that all items listed below are included in your package:
- ICOMTOFIT M-ONE Bluetooth Headset
- Charging Case
- USB Dongle
- USB Type-C Charging Cable
- Earplugs (S, M, L sizes, two of each)
- User Manual (this document)

Image: ICOMTOFIT M-ONE Bluetooth Headset, charging case, and USB dongle.
Product Overview
Familiarize yourself with the components and controls of your M-ONE headset:

Image: Diagram illustrating the control buttons on the headset.
- USB Type-C Charging Port: For charging the headset directly.
- Phone Pairing / Play / Pause Button: Press and hold for pairing, single press for play/pause music, or answer/end calls.
- Volume+ / Next Song Button: Single press to increase volume, long press to skip to the next song.
- Volume- / Previous Song Button: Single press to decrease volume, long press to go to the previous song.
- Mute / Siri Button: Single press to mute/unmute the microphone during a call, long press for 2 seconds to activate the voice assistant (Siri, Google Assistant, etc.).
Setup
Charging the Headset
Before first use, fully charge the headset. The charging case also provides convenient charging.

Image: Correct and incorrect methods for placing the headset in its charging case.
- Align Charging Contacts: Position the headset's charging port to match the charging case's metal pins. Adjust the headset until you hear a 'click' indicating secure placement.
- Confirm Charging Status: When the headset's red light stays on and the charging case's LED screen shows its remaining digital battery level, charging has started. Note: The case's battery level isn't the headset's.
- A full charge takes approximately 2 hours.
For more detailed charging information, scan the QR code: Charging Guide
Pairing with Your Device
1. Initial Bluetooth Pairing (Phone/Tablet)
- Ensure the headset is charged and powered off.
- Press and hold the Phone Pairing / Play / Pause button until the LED indicator flashes blue and red alternately, indicating pairing mode.
- On your smartphone or tablet, go to Bluetooth settings and enable Bluetooth.
- Search for available devices and select "M-ONE" from the list.
- Once connected, the LED indicator will flash blue slowly.

Image: The ICOMTOFIT M-ONE headset displaying pairing status with a smartphone.
2. Pairing with PC using USB Dongle
If your computer does not have Bluetooth or you prefer a more stable connection:
- Insert the provided USB dongle into an available USB port on your computer.
- Power on the M-ONE headset. It will automatically connect to the USB dongle.
- The LED on the dongle and headset will indicate a successful connection.

Image: ICOMTOFIT M-ONE headset connected to a laptop via its USB dongle.
3. Connecting to Two Devices Simultaneously
The M-ONE headset supports connecting to two Bluetooth devices at once, allowing seamless switching between them.
- Pair the headset with the first device (e.g., your phone) as described above.
- Disable Bluetooth on the first device. The headset will re-enter pairing mode.
- Pair the headset with the second device (e.g., your laptop or another phone).
- Re-enable Bluetooth on the first device. The headset should automatically reconnect to both devices.
- To switch between devices, simply pause audio/end calls on one device and start audio/calls on the other.

Image: The ICOMTOFIT M-ONE headset connected to both a smartphone and a laptop.
Operating Instructions
Power On/Off
- Power On: Press and hold the Phone Pairing / Play / Pause button for approximately 3 seconds until you hear a power-on prompt and the blue LED flashes.
- Power Off: Press and hold the Phone Pairing / Play / Pause button for approximately 5 seconds until you hear a power-off prompt and the red LED flashes briefly before turning off.
Call Management
- Answer/End Call: Single press the Phone Pairing / Play / Pause button.
- Reject Call: Press and hold the Phone Pairing / Play / Pause button for 2 seconds.
- Mute/Unmute Microphone: Single press the Mute / Siri button during an active call.
Music Playback
- Play/Pause: Single press the Phone Pairing / Play / Pause button.
- Volume Up: Single press the Volume+ / Next Song button.
- Volume Down: Single press the Volume- / Previous Song button.
- Next Track: Long press the Volume+ / Next Song button.
- Previous Track: Long press the Volume- / Previous Song button.
Voice Assistant Activation
- Activate Voice Assistant: Long press the Mute / Siri button for 2 seconds to activate your device's voice assistant (e.g., Siri, Google Assistant).
Wearing the Headset
The M-ONE headset is designed for comfort during extended use. Adjust it to fit your ear securely.

Image: A person wearing the ICOMTOFIT M-ONE Bluetooth headset.
- Adjustable Ear Hook: The ear hook can be rotated to fit either your left or right ear. Gently adjust it for a snug and comfortable fit.
- Choose the Right Earplug: The headset comes with S, M, and L size earplugs. Experiment to find the size that provides the best seal and comfort for your ear canal. A proper seal enhances sound quality and noise cancellation.

Image: The ICOMTOFIT M-ONE headset with a visual representation of the included S, M, and L earplug sizes.
Maintenance
To ensure the longevity and optimal performance of your ICOMTOFIT M-ONE headset, follow these maintenance guidelines:
- Cleaning: Regularly wipe the headset and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Storage: When not in use, store the headset in its charging case to protect it from dust and damage. Store in a cool, dry place, away from extreme temperatures.
- Avoid Moisture: Keep the headset and charging case away from water and excessive moisture.
- Charging: Charge the headset regularly, even if not in frequent use, to maintain battery health.
Troubleshooting
If you encounter issues with your M-ONE headset, refer to the following common problems and solutions:
- Headset will not power on:
Ensure the headset is fully charged. Connect it to the charging cable or place it in the charging case for at least 30 minutes. - Cannot pair with device:
Make sure the headset is in pairing mode (LED flashing blue and red). Ensure Bluetooth is enabled on your device and it is within 33 feet (10 meters) of the headset. Try restarting both the headset and your device. Clear previous Bluetooth connections on your device if necessary. - No sound or low volume:
Check the volume levels on both the headset and your connected device. Ensure the headset is properly connected and selected as the audio output device. - Poor call quality or noise:
Ensure the microphone is not muted. Move closer to your connected device to improve signal strength. Avoid environments with strong electromagnetic interference. - Headset disconnects frequently:
Ensure the headset is within the Bluetooth range of your device. Avoid physical obstructions between the headset and your device. Ensure other wireless devices are not causing interference. - Charging case LED display is off:
Connect the charging case to a power source using the USB Type-C cable. The display should activate to show the battery level.
Specifications
| Feature | Specification |
|---|---|
| Model Name | M-ONE |
| Brand | ICOMTOFIT |
| Connectivity Technology | Wireless |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 33 Feet (10 meters) |
| Noise Control | Active Noise Cancellation |
| Charging Time | 2 Hours |
| Item Weight | 3 Grams (0.106 ounces) |
| Frequency Range | 20 Hz - 20,000 Hz |
| Compatible Devices | Cellphones |
| Material | Plastic |
Warranty and Support
ICOMTOFIT products are designed for reliability and performance. For any questions, technical support, or warranty claims, please contact ICOMTOFIT customer service through the retailer's platform or the official brand website. Please retain your proof of purchase for warranty service.