The Hollyland Solidcom C1-4S full duplex wireless intercom system with 4 headsets is designed to provide clear audio and all-day comfort in a true-wireless design, without the need for a bodypack or hub. This configuration includes 4 single-sided headsets, 1 master and 3 remote units, along with rechargeable batteries, a charger and accessories. The system uses DECT 6.0 encryption and dual antenna technology to ensure secure and reliable transmission at a range of up to 1000′, making it suitable for a variety of applications including film production, concerts and public events. Hollyland Solidcom C1-4S full duplex wireless intercom system with 4 headsets offers a frequency response of 150 Hz to 7 kHz and premium acoustic echo cancellation (AEC) to ensure clear and intelligible audio for effective teamwork. The directional microphone captures the speaker’s voice accurately, minimising unwanted background sound, making conversations easier even in noisy environments. Hollyland Solidcom C1-4S full duplex wireless intercom system with 4 headsets is built on the powerful DECT 6.0 platform and features a dual antenna diversity scheme, can prevent people outside the system from hearing your conversation with encryption technology and provides stable and reliable transmission with doubled user capacity on the communication channel. Each headset operates on a single rechargeable battery. The battery life of the main headset depends on the number of subsequent headsets in use; with 5 remote headsets connected, the battery lasts approximately 5 hours; with 3 subsequent headsets in use, the battery life is 6 hours. Each remote earpiece can last up to 10 hours on a single battery charge. Each battery is fully charged in 2.5 hours and a battery charging station, USB cable and AC adapter are included.