Hollyland › Hollyland Solidcom M1 Double-Ear Headset Full-Duplex Wireless Intercom System - Base/4x Headsets/Beltpacks/Batteries Image 1 of 1 Hollyland Solidcom M1 Double-Ear Headset Full-Duplex Wireless Intercom System - Base/4x Headsets/Beltpacks/Batteries $4,499.00 Get notified by email when this product is in stock. Quantity: Purchase Added!