The Solidcom C1 Pro, Hollyland's first-of-its-kind full-duplex wireless intercom headset systemfeaturing dual-mic Environmental Noise Cancellation (ENC) technology, is incredibly lightweightand easy to use. It is a true game changer with built-in ENC, ideal for production teams workingin loud environments where exceptional communication clarity is essential.This new generation headset system features advanced DECT 6.0 technology, a wideband audio range of 150Hz to 7kHz, and a reliable LOS communication range of up to 350m. Key Features: Dual-Mic ENC PTT Function 150Hz–7kHz Wideband Audio 1,100ft (350m) Reliable Range DECT 6.0-Enhanced Stability Ultra-long Duration Increased Portability & Durability Ready Out of Box Backward Compatibility A & B Dual Grouping (Requires HUB) Three-System Cascaded Connection ANNOUNCE Function Specifications: Transmission Range1,100ft (350m) LOS Frequency Band1.9 GHz (DECT) (varies by country and region) Modulation ModeGFSK RX Sensitivity<–90dBm Battery Capacity700mAh (2.66Wh) Operation TimeRemote headset: >10 hours (ENC ON)Master headset: >5 hours (ENC ON with 5 remote headsets)Master headset: >4 hours (ENC ON with 7 remote headsets) Charging TimeAbout 2.5 hours Frequency ResponseENC OFF: 150Hz–7kHz (fluctuation range: ±6dB)ENC ON: 150Hz–7kHz (fluctuation range: ±10dB) Signal-to-Noise Ratio71±2dB@94dBSPL,1kHz Distortion<1%@94dBSPL, 150Hz–7kHz Microphone TypeElectret Input SPL>115dBSPL Output SPL94±3dBSPL (@94dBSPL, 1kHz) ENC20dB±2 Net WeightAbout 170g (6oz) with the battery included for each wireless headset Temperature Range0℃ to 45℃ (working condition)–10℃ to 60℃ (storage condition In the Box (2 person set): Master Headset (With Red Nameplate) x1 Remote Headset (With Blue Nameplate) x1 Charging Case x1 Battery x4 Microphone Cushion x2 Over-ear Leather Cushion x2 On-ear Foam Cushion x2 USB-A to USB-C Cable x1 Storage Case x1 User Manual x1 Warranty Card x1"