MIMIRACLE Referee Headset, Referee Communication System with Headset Earphone, Bluetooth Intercom for Football Soccer Handball -1Pack

4 Pack Set: The 4-pack set comes with a specially designed suitcase to help you carry the 4 sets of headphones and their accessories.
Professional Referee Intercom: Our referee communication system allows you to connect 4 referees meanwhile, total range up to 1500 meters.
Clear and Stable Sound: With improved CVC noise cancellation technology, it reduces surrounding wind and background noise. So that the sound you hear is more clear and stable even in a noisy stadium.
Wide Applications: An excellent partner for most competition referees like football referees, basketball referees, golf referees, etc. In addition to referees, this referee headset is also suitable for daily training, construction sites, venue scheduling and other outdoor activities.
Large Battery Capacity: This headset runs on a 850mAh large rechargeable battery. With just 2.5 hours of charging, the intercom working time can reach 19hours and the standby time can reach 260hours, which can meet the needs of long-time referees communication.

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