Check the listing for details. Saramonic WiTalk WT5D 400m Full-Duplex Wireless Intercom Headset System 5-Person. Color: Black, Condition: New. Listed at 999.00 USD. Saramonic WiTalk WT5D 400m Full-Duplex Wireless Intercom Headset System 5-PersonWiTalk WT5DFull-Duplex Wireless Intercom Headset SystemThe WiTalk WT5D operates on the less busy 1.9GHz wireless frequency range, ensuring quality signal without interference and privacy security. It enables walking around freely while two-way communication and the transmission distance is up to 400 meters, perfect for filmmaking, sports events, production crew communication, etc.More powerful than walkie-talkies, adopted headset integrated wireless communication design, the WiTalk WT5D can effectively improve work efficiency, allowing hand-free and do more things. Including a Master headset and four Remote headsets, it allows up to 5 people to communicate simultaneously, ideal for teams and multi-person use occasions.With GFSK modulation technology, the WiTalk WT5D delivers high-resolution sound with 65dB signal-to-noise ratio. With a lever-type switch design, the WiTalk WT5D is convenient and quick to raise the lever for mute and put down the lever for communication, and easy to use.Available for charging while using (via the Type-C port), the WiTalk WT5D features an internal lithium-ion battery with up to 10 hours of runtime (Dual-Ear Master Headset) or up to 18-hours of runtime(Dual-Ear Remote Headset). With the optimized headset design, the WiTalk WT5D fits the shape of your ear and head perfectly for incredible comfort, so you can stay focused longer. 1.9GHz Frequency RangeTwo-way communication at a range of up to 400mRechargeable & Replaceable BatteryLever-type Switch Design, Hand-free OperationSupreme Comfort Wear ExperienceA Master headset and four Remote headsets, Easy for TeamworkDual-Ear Master Headset Duplex mode: Full-Duplex(FDX) Modulation: GFSK Carrier frequencies: 1787MHz-1928MHz Microphone type: Condenser microphone Operating range: Up to 1312ft (400m) without obstacles Frequency response: 300Hz-5KHz RF output power: