【Latest Chip Model】With newest bluetooth transmission technology, this referee intercom headset ensures that every instruction and communication between referees across the whole field is delivered with clarity. 【Meticulous and Innovative In-ear Designed Earpiece】This new football referee earpiece is designed to fit comfortably for human ear structure,providing an intuitive and secure fit,No more taping or readjustments required. 【Various Sports Application】This wireless arbitro football referee comunicador is designed to enhance your officiating performance across various sports,like football,handball,basketball,vollyball,fishing,riding,cycling, hiking,ATV,scene instruction,etc.. 【Pairing Memory】This soccer referee bluetooth headsets pairing memory makes one time pairing and for all,next use just needs some simple button press,no startover needed. 【Warranty】Any problem about this headsets for soccer referee is free to return and exchange within 2years.