David Clark HBT-40 Behind-the-Head Bluetooth Industrial Headset Intercom Adapter Meets air quality standards and

Meets air quality standards and is plastic-safe

Does not stick to wicks

The bonding surface can be wood

Designed for student pilots

Fail-safe operation maintains communications even if ENC power is lost

David Clark HBT-40 Behind-the-Head Bluetooth Industrial Headset Intercom Adapter Meets air quality standards andDavid Clark Aurora HBT 40 Behind the Head Bluetooth Headset Rugged and reliable, the David Clark HBT 40 Bluetooth headset combines OSHA compliant hearing protection with wireless communication for industrial use. Key Features and Benefits Bluetooth 4. 0 Wireless Connectivity: Pairs easily with smartphones, tablets, and ruggedized industrial devices. OSHA Compliant Hearing Protection: Designed to protect against harmful noise levels in industrial