Hollyland Solidcom SE Pro 4S Full-Duplex Intercom System is a wireless crew-communication solution for coordinated productions. Best for: Multi-person production crews, live events, camera teams and coordination. Key features: • four-headset full-duplex intercom • wireless crew communication • battery-powered field operation • hands-free production coordination Included with rental: 4 headsets/intercom units; 8 batteries Clean and ready to use! Pickup in Garden Grove, CA. Delivery available by arrangement.