The Solidcom C1, full-duplex wireless intercom headset system, adopting the advanced DECT 6.0 technology, is Hollyland's first true wireless and self-contained headset communication solution with exceptional sound clarity. The system operates in the 1.9GHz frequency band, providing a reliable transmission range up to 1000ft (304.8m) radius (LOS). • Wideband Clear Audio Quality for Precise Coordination • Comfortable to Wear All Day Long, Hands Free and Hygienic Materials • Customizable and Expandable for Varying Team Size • Stay Connected in 1000ft Coverage Zone • swing up to mute mic • Maximum of 6 total headsets per set