2-person Headset Intercom. The Solidcom C1 full-duplex wireless intercom headset system is Hollyland's first true wireless and self-contained headset communication solution with exceptional sound clarity. The system provides a reliable transmission range up to 350 m radius (LOS). Each headset is designed with a dual-antenna diversity scheme that reinforces anti-interference capability, guaranteeing secured and constant team communication in complex environments. With no belt pack or base station, it offers a highly portable and hands-free coordinating experience for media production teams or any team looking for real-time non-blocking voice communication in socially distanced working scenarios. The headset system automatically pair up right out of the box. Each single headset weighs only 168 g, offering a comfortable wearing experience for long hours. Each intercom headset comes with a spare lithium battery for convenient field replacement.