Check the listing for details. 2 x Full Duplex Football Soccter Judge Referee Bluetooth Headset Intercom. Color: Black, Condition: New. Listed at 119.99 USD. This headset is specially designed for referees of football and handball. Referees wear a single ear headset to get the real time news of the game, this headset support them to run freely but also hear a clear sound even the surrounding is noisy. This kit includes referee headset and Vnetphone V4 intercom, the headset works with the intercom very well. Referees can hear the sound clearly even the surrouding is noisy, V4 helps referee to talk in 1200m range, perect for a football field. Features: 1. 2 users full duplex communication (2 users talk at the same time) 2. Once pairing is successful,the intercom will automatically enter the real-time communication when powered. 3. Real time full duplex communication for 54 users at most 4. No need hot keys, easy to use 5. Memory pairing, simple and easy. 6. Support FM 7. Latest chipset from Amercia,HI-FI sound 8. High-power headset, which can be used In a noisy environment 9. National Level 5 waterproof standard 10. Auto-receiving the cellphone call when you are in intercom channel 11. 4 users full duplex talk 12. Stereo music/audio transmits from A2DP enabled phone/MP3/GPS),Advanced A2DP & EDR bluetooth 3.0 profile. Clear Audio Applied occasions: 1. Specially for mountaineering: Waterproof, Wind noise DSP cancellation. High power, full-duplex talking, no need PPT button, release your hands. So you can concentrate on the mountain climbing and contact with your teammate in time. 2. Skiing Full-duplex communication, easy to use, convenient to contact with teammate, what’s more, you can answer the phone calls hands-free. 3. Concert Used between the light control, audio division, security guard and director, timely and convenient, full-duplex and real time talking 4. Gymnasium Used for timely communication between referees. Generally, any sport event need more than 2 referees to talk at real time, so they can make a correct judgment. This Bluetooth intercom solved the problem. Meanwhile, the security guard and the working staff can use it too. 5. Cycling When you’re riding bicycle with relatives and friends, the intercom helps you to talk at real time, and auto receive phone calls for you. What’s more, you can listen to the music from the mobile phone as well. 6. Construction site Full-duplex communication between tower crane driver and conductor to ensure the safety of construction 7. Port command For container scheduling and command, etc.