Hollyland Solidcom SE Global 5S 5-Person Full-Duplex Single-Ear Noise-Canceling Headset Intercom System (2.4 GHz). The Solidcom SE 5S Global 5-Person Full-Duplex Single-Ear Noise-Canceling Headset Intercom offers small- and medium-sized production teams a cost-effective, powerful communication solution. This set includes 1 master single-ear headset and 4 remote single-ear headsets. Operating on the 2.4 GHz frequency, the system features lightweight design, Environmental Noise Cancellation (ENC), water and wind resistance, and extended battery life, enabling effective collaboration in diverse environments from commercial video production to waterside operations. The system supports up to 5 users and cannot be expanded. Key features: Seamless Team Talk & ENC Noise Cancellation with full-duplex operation, lightweight design, and resistance to water and wind. Reliable Communication with stable connection up to 1,100ft (350m), auto frequency hopping for interference-free performance. Superior Sound with 70dB SNR, dual-mic ENC to cancel environmental noise, water and wind resistance, and internal protective coating. Hassle-Free Operation with moveable microphone boom, one-press mute/talk, lightweight durable materials, and replaceable over-ear ear pads for comfort. Up to 12H Runtime with detachable batteries, USB-C charging, and charging while using; 12 hours for remote headsets, 10 hours for master headset. In the box: Hollyland Solidcom SE Global 5S 5-Person Full-Duplex Single-Ear Noise-Canceling Headset Intercom System, Master Headset, 4 x Remote Single-Ear Headsets, 6-Slot Battery Charging Base, 5 x Lithium-Ion Battery Pack 770, USB-A to USB-C Cable, Set of Number Stickers. UPC: 810174770636. MPN: SOLIDCOM-5S.