GaiRen Referee Headset, USB C Interface Communication System with Headset Earphone for Volleyball Official Football Soccer Handball (4 Pack

Key FuturesUpgraded 4 Riders Group IntercomV4 Plus Bluetooth Intercom allows you to connect 4 riders meanwhile for conference intercom, total range up to 1500 metersCVC Noise Reduction TechnologyCVC is a sort of software noise reduction technology. The principle is to reduce the noise through its build in software and microphone, further eliminating some kinds of reverberation noise. Bluetooth Version 5. 1Steady data transmission and premium performance. The advanced Bluetooth chip with optimized Bluetooth version 5. 1 dramatically increase the transmission rate and while keep the low energy consumption. Voice Assistant', There's no need to bring out your phone, just talk directly to the microphone to awaken your voice assistant. , 'Waterproof IP65High degree waterproof, freely used on rainy days. Specification:Bluetooth version: Bluetooth V5. 1Battery Capacity:750mAhWorking time: 24 hoursCharging time: 2 hoursStandby time: 150 hoursWaterproof Level: IP65FM Radio: YesWireless transmission range: 1500m.