Welcomed any wholesale business NOTE: the intercom(V4/V6/FBIM) is not including Feature: Plug Type:3.5mm Place of Origin:China (Mainland) Suited:for V6 /V4/ Intercom Special Properties 1:for Football Referee Arbitration and Coach Special Properties 2:Monaural Headset Earhook Earphone Special Properties 3:Football Referee Intercom Headset Special Properties 4:Football Referee Intercom Earphone This headset is specially designed for referees of football and handball. Referees wear a single ear headset to get the real time news of the game, this headset support them to run freely but also hear a clear sound even the surrounding is noisy. The headset works with Vnetphone / intercom , V6 V4 are recommended , to work with the headset-so you can group a four-person-team to talk at real time ( V6 have to switch one by one). Referee In-ear Earphones , simple and lightweight, 3.5 interface,Widely using in football referees. HIFI-R Referee In-ear Earphones for V4C V6C Referee Intercom Headset Get one if you happens to be a football lover or motorcycle fans By the way, only a referee headset is included, no intercom. kindly reminder: 1. This earphone only can work for intercom V6 V4 and 2. Intercom Not Included ,only earphone & microphone, if you need the Intercom, you can click here: When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!