[4-Way communication]: Applying upgraded Qualcomm Bluetooth 5.1 chip, EJEAS V4 Plus can achieve more smooth and stable data transmission. It supports up to 4 riders pairing and talk at the same time, and the intercom range can reach 1500m in open areas (distance of 4 units). [CVC Noise Reduction Technology]: V4 Plus motorcycle bluetooth headset adopts advanced CVC noise reduction technology to reduce the echo and background noise of the call. With the Hi-Fi speakers, the sound you hear is more 3D, clear and stable. [750mAh Battery Capacity]: V4 Plus motorcycle helmet bluetooth intercom runs on high-capacity rechargeable battery. Just charging for 3h, the talk time is up to 18h and music playing time can reach 24h. The standby time is as long as 260h, which can meet the needs of long-time cycling calls. [Connect 2 Mobile Phones]: V4 Plus helmet bluetooth headset can connect 2 mobile phones via bluetooth and support auto-receiving calls, intercom and FM/music hearing simultaneously, voice assistant function. The connection distance with mobile phone can reach 10 meters. [Wide Application]: EJEAS V4 Plus motorcycle communication system is suitable for most full-face helmets, half helmets and open helmets, and the installation is quite simple. It can be used together with our EUC remote control handle to keep your riding safe and comfortable. motorcycle helmet bluetooth intercom, motorcycle bluetooth headset, helmet bluetooth headset, EJEAS V4 Plus