Product Description: This 2-piece Professional Football Referee Intercom kit is designed for referees in football and handball, offering reliable communication during the game. The wireless Bluetooth headsets feature full-duplex communication, allowing referees to stay in constant contact, even in noisy environments. With a 1200m (3937ft) communication range, the intercom system ensures clear, real-time updates between referees, perfect for managing the flow of the game on a football field. Features: Designed for Referees: Single-ear headset enables referees to communicate clearly while staying alert to the game. Long Communication Range: Up to 1200 meters (3937 feet) between two referees, providing ample coverage on the field. Full Duplex Communication: Allows continuous conversation without interference, even in noisy environments. High-Speed Compatibility: Works seamlessly at speeds up to 120km/h. Extended Battery Life: Up to 12 hours of talking time, with a 400-hour standby. Reliable & Fast Charging: Fully charges in about 3 hours using a 850mAh Li-Polymer battery. Wind Noise DSP Cancellation: Ensures clear audio even in windy or fast-moving conditions. Multiple Pairing: Can connect up to 6 devices, with real-time communication between any 2 at a time. Weatherproof Design: Ultrasonic molding ensures excellent water resistance, suitable for all weather conditions. Stereo Bluetooth Headset: Supports stereo music and GPS navigation audio. Ideal for: Referees working in football, handball, or other sports. Motorcycle helmets (full-face or half-face). Small teams of referees (3-4 units for a referee group). Specifications: Frequency: 2.4GHz Bluetooth Version: Bluetooth 3.0 Power Supply: AC 110V~240V (DC 5V 55~75mA output) Chip Brand: CSR Battery Capacity: 850mAh Li-Polymer Charging Time: Approx. 3 hours Talk Time: Up to 12 hours Package Includes: 2 x V6 Bluetooth Intercom Units 2 x Referee Headsets 2 x Armband Bags 2 x USB Charging Cables 1 x User Manual Note: For optimal performance, we recommend using 3-4 headsets to form a referee group.