Robust two-way analogue communication radio headset designed to help you communicate efficiently and safety in high noise environments. Features and Benefits Robust hearing protector with built-in, pre-programmed analog two-way radio communication two-way analogue communication radio for easy use Designed using level-dependent technology that improve communication and situational awareness for improved safety Noise cancelling dynamic microphone designed to allow voice-operated transmissions leaving hands free for use Mobile devices or two-way radio easily connect using external connection jack Clear battery and auto power off indicators for easy status identification Powerful lithium-ion battery for prolonged use 8 channels with 121 sub-channels for effective communication Typical Applications Manufacturing Construction Notes Weight (incl. batteries): headband 464g, neckband 453g, helmet 491g Operating temperature: -20C to +55C Operating time: 20 hours Bluetooth multip