Introduction
This manual provides comprehensive instructions for the Maxquall Referee Headset Microphone. Designed for clear and reliable communication, this headset is suitable for various sports and professional applications. Please read this manual thoroughly before using the product to ensure proper operation and maintenance.
What's Included
The Maxquall Referee Headset Microphone package includes the following components:
- 3 x Right Earpieces (Current product variant)
- 1 x User Manual
- 1 x Intercom Device (V4 Plus, as shown in product images)
- 1 x Arm Bag
- 1 x USB Charging Cable

Image Description: A display of the product components including the intercom unit, earpieces, arm bag, and charging cable.
Features
- Advanced Bluetooth Technology: Equipped with the latest Bluetooth 5.1 for stable and clear wireless transmission.
- Ergonomic In-ear Design: Meticulously designed to fit the human ear structure comfortably, providing a secure fit without the need for additional taping or readjustments.
- Noise Cancellation: Features active noise cancellation to ensure clear and uninterrupted communication, even in noisy environments.
- Pairing Memory: Simplifies connection with a one-time pairing process; subsequent uses require only simple button presses.
- Versatile Application: Suitable for various sports such as football, handball, basketball, volleyball, cycling, hiking, ATV activities, and scene instruction.
- Compact and Lightweight: Designed for comfort during extended use, weighing approximately 1.94 ounces.
- Dual Connectivity Options: Supports both Bluetooth 5.1 wireless connection and a traditional 3.5mm audio jack.

Image Description: An illustration showing the headset's soft adjustable wire and in-ear design, ensuring a secure fit without falling and comfort for the human ear structure.

Image Description: A detailed view of the microphone, emphasizing its durable and flexible construction for long-term use and easy adjustment.

Image Description: A visual representation of the headset's applicability across multiple activities like cycling, fishing, skiing, construction, and team sports, as well as scene instruction.
Setup
1. Charging the Device
Before first use, fully charge the intercom device using the provided USB charging cable. The device is equipped with a battery capacity designed for a full day's use.
2. Wearing the Earpiece
Gently place the earhook earpiece over your ear, ensuring the in-ear component sits comfortably and securely in your ear canal. The adjustable wire allows for a customized fit. The design is intended to stay in place without additional support.

Image Description: A referee demonstrates wearing the headset, showing the earhook earpiece and boom microphone in position for clear communication.
3. Pairing with Intercom Device
- Ensure both the headset and the compatible V4 or V6 intercom device are powered off.
- Follow the specific pairing instructions for your V4 or V6 intercom device to enter pairing mode.
- Activate the headset's Bluetooth pairing mode (refer to the intercom device's manual for specific button sequences).
- Once paired, the headset will remember the connection for future use, simplifying subsequent connections.
Operation
Basic Communication
Once paired, the headset will facilitate two-way communication with your connected intercom device. The microphone is designed for optimal voice pickup, and the earpiece delivers clear audio. Utilize the touch controls on the intercom device for functions such as volume adjustment, channel switching, and power management.

Image Description: The Maxquall Moto Intercom V4 Plus unit, featuring control buttons and an antenna, designed for robust communication.

Image Description: An aerial view of a soccer field with referees communicating via headsets, illustrating clear communication across the field.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the earpiece and microphone. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid sharp bends or excessive pulling on the cables to prevent damage.
Troubleshooting
- No Sound/Poor Sound Quality:
- Check volume levels on both the headset and the connected intercom device.
- Ensure the earpiece is properly seated in your ear.
- Verify the connection (Bluetooth or 3.5mm jack) is secure.
- Re-pair the headset with the intercom device if using Bluetooth.
- Headset Not Pairing:
- Ensure both devices are in pairing mode.
- Turn off and restart both devices, then attempt pairing again.
- Clear previous pairing records on the intercom device if available.
- Intermittent Connection:
- Ensure there are no obstructions between the headset and the intercom device.
- Check for other devices that might be causing interference.
- Ensure both devices are sufficiently charged.
Specifications
| Model Name | 3pcs referee headset microphone |
| Connectivity Technology | Wired, Bluetooth |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Version | 5.1 |
| Material | Plastic |
| Item Weight | 1.94 ounces (0.06 Kilograms) |
| Earpiece Shape | In the ear |
| Noise Control | Active Noise Cancellation |
| Compatible Devices | V6 Intercom Device, V4 Intercom Device |
| Control Method | Touch |
| Power Source | 1 Lithium Ion battery (included) |
Official Product Video
Video Description: An official product video demonstrating the features and use of the Maxquall Referee Headset Microphone, highlighting its design, connectivity, and application in sports.
Warranty and Support
The Maxquall Referee Headset Microphone comes with a 2-year warranty for return and exchange in case of any product issues. For further assistance, troubleshooting, or warranty claims, please contact Maxquall customer support through the retailer where the product was purchased.

Image Description: An image showcasing the patent protection for the Maxquall brand and its product design, established since 2017.