GaiRen V4C Plus Referee Headsets with Right Earpiece, USB C Interface Referee Communication System Sets for Volleyball Official Football Coach Crews Soccer Handball

【Clear and Stable Sound】Improved CVC noise reduction technology and Bluetooth 5.1 provide clear and stable sound, even in noisy environments. 【Wide Applications】V4 Plus is suitable for most competition referees and outdoor activities like soccer, football, volleyball, basketball referees, golf referees training, construction sites, crews, venue scheduling. 【4-Person Group Intercom】V4 Plus allows 4 person to connect for conference intercom, with a total range of 1500 meters. 【Low Power Consumption】With circuit optimization, power consumption is reduced by 20%. Talk time is up to 18 hours, music playing time is up to 24 hours, with just 2 hours of charging. 【Waterproof】The IP65 waterproof headset can withstand most weather conditions, with a temperature range of 14℉ to 122℉, suitable for use in most countries and regions.