XiNOWy V4C Referee Headset Bluetooth Intercom Football Soccer Earphone Full Duplex 1200M BT Interphone Waterproof IPX5

Please note: Please use a DC 5V-1A power charger to charge the intercom product; the maximum output power of the charger should not exceed 5W. Please do not use a fast charger to charge this device.(Plug not included) Note: if used on helmets, it is only applicable to semi-covered helmets/bicycle helmets. Xinowy V4c 1200m full duplex football referee intercom headset Bluetooth headphone with FM radio BT Interphone earphone XiNOWy V4C are professional communication tools designed for referees, they work well for soccer referees, football referees, handball referees, etc. Perfect for organizing a 2-4-person communication team. This referee headset kit saves money for you, allowing referees to communicate without difficulties within a range of 1200m.Even when they are moving around rapidly, they could hear super clearly. What's more, we also provide an armband to attach the intercom headset, so referees can wear the armband and use the headset much more easily. V4C Features: Real-time three-way referee intercom Yes, 2-4 people can talk at the same time. Max talking range: 1200m/3937feet Max working speed: Up to 120Km/h Talking time: Up to 8 hours Standby time: 100 hours Frequency: 2.4GHz Bluetooth Core: Bluetooth 3.0 Battery: 850mAh Li Polymer battery Charging time: About 3 hours Chip fire: CSR Power supply: AC 110V~240V Power output: DC 5V 55~75mA Specification: Bluetooth version: 3.0 Chip: A2DP Bc5 Battery capacity: 550mAh Battery type: polymer Charge and discharge times: 500 Working voltage: 3.3V-4.2V Call time: 8 hours Standby time: 150H Charging time: 2.5H Radio frequency band: FM87.5~108MHz RDS: None Speaker power: 0.25W waterproof level: With or without TTS: None With or without automatic volume adjustment: none Operating temperature range: -10° C to +45° C (minimum and maximum operating temperature) Please note: Items with or without a logo will be shipped randomly, arm bags with or without an opening will be shipped randomly, cannot be specified. The holes are not caused by damage, they are designed. d to be applicable to certain models. Package included: 1/2 x V4C Intercom 1/2 x Referee headset 1/2 x Bracelet bag 1/2 x USB charging cable 1 x User manual