Introduction
The Maxquall Referee Headset is designed for clear, full-duplex wireless communication, ideal for sports officials, coaching, and other professional applications requiring hands-free communication. This manual provides essential information for setting up, operating, and maintaining your headset system.
What's in the Box
Your Maxquall Referee Headset package includes the following components:
- Referee Headset Units (2 units)
- In-ear Earpieces
- Charging Cable (USB)
- Armband for Headset
- User Manual


For a visual guide on unboxing the system, please refer to the video below:
Video: GaiRen V4 Plus referee communication system unboxing. This video demonstrates the unboxing process and shows the contents of the package.
Setup
Wearing the Headset
The headset is designed for comfortable and secure wear during activities. The in-ear earpiece ensures clear audio reception.
Video: GaiRen referee headset in-ear style for left ear. This video illustrates the correct way to wear the in-ear earpiece for the left ear, ensuring proper fit and comfort.
Attaching to Armband
For convenience and hands-free operation, the main unit can be placed in the provided armband and worn on your arm.
Operating Instructions
Power On/Off
To power on the headset, press and hold the power button for approximately 1 second until the indicator light illuminates. To power off, repeat the process.
Pairing Multiple Units
The Maxquall Referee Headset supports communication between multiple units. Follow the instructions below for pairing:
Pairing 2 or 3 Units
To pair two or three units for communication, follow the steps outlined in the video below. This process typically involves powering on all units and then initiating a pairing sequence by pressing specific buttons on the devices.
Video: MaxQuall 3V4 Referee Headset Pairing Video. This video provides a step-by-step guide on how to pair 2 or 3 Maxquall referee headset units for intercom communication.
Pairing 4 Units
For systems involving four units, a specific pairing sequence is required to establish full communication. Refer to the video guide for detailed instructions.
Video: How to connect four pack of EJEAS V4Plus successfully? This video demonstrates the pairing process for four units of the V4Plus intercom system, which is compatible with Maxquall headsets.
Key Features
- Bluetooth 5.1: Equipped with the latest Bluetooth 5.1 technology for faster matching, steadier signals, and lower power consumption.
- Noise Cancellation: Features active noise cancellation for clearer communication in noisy environments.
- Waterproof Design: IP67 waterproof rating ensures durability and performance in various weather conditions.
- Pairing Memory: Once paired, units retain their connection settings, eliminating the need to re-pair each time.



Maintenance
Charging
The headset is powered by a Lithium Ion battery (included). A full charge takes approximately 2.5 hours. Ensure the battery is charged before initial use.

Battery Life
The headset offers an impressive battery life of up to 300 hours on standby. Actual usage time may vary depending on communication frequency and volume levels.
Troubleshooting
- No Power: Ensure the battery is fully charged. Check that the battery is correctly inserted.
- Pairing Issues: If units fail to pair, ensure all units are powered on and within range. Repeat the pairing sequence carefully as shown in the videos.
- Poor Audio Quality: Check earpiece connection and placement. Ensure the microphone is positioned correctly. Verify that noise cancellation is active if in a noisy environment.
- Limited Range: Ensure there are no significant obstructions between the communicating units. Optimal range is achieved in open environments.
Specifications
| Feature | Detail |
|---|---|
| Model Name | Maxquall referee headset |
| Connectivity Technology | Wireless (Bluetooth 5.1) |
| Headphones Jack | 3.5 mm Jack |
| Battery Life | 300 Hours (Standby) |
| Charging Time | 2.5 Hours |
| Noise Control | Active Noise Cancellation |
| Water Resistance Level | Waterproof (IP67) |
| Item Weight | 10.2 ounces |
| Number of Items | 2 |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official Maxquall website. Keep your proof of purchase for any warranty claims.