[2 People Real-Time Intercom]: EJEAS V6C is a 2-way full duplex 1200m referee communication system. Using optimized Qualcomm Bluetooth 5.1 chip, it supports up to 6 people pairing but only 2 units can talk to each other at a time (the host can choose one of the 5 sub-devices). | [Noise Reduction Technology]: V6C referee communication system adopts advanced DSP noise reduction technology to eliminate the echo and ambient noise of the call, so that you can enjoy more stable and crystal clear sound while driving. | [Long Battery Life]: V6C referee intercom runs on 850mAh large rechargeable battery. Just charging for 3h, the intercom time can reach 18h and music playing time is up to 25h. The standby time is about 260h, which can meet the needs of long-time referees communication. | [Wide Applications]: V6C wireless bluetooth interphone is an excellent partner for most competition referees like football referees, basketball referees, golf referees, etc. In addition to referees, V6C is suitable for daily training, construction sites, venue scheduling and other outdoor activities. | [Nifty Portable Design]: EJEAS V6C is small and portable, easy to install and carry. With the over-ear headphone design, the wearing is more stable and secure. You can put the interphone into your armband, and it will not affect the intercom effect when moving fast.