The CN Ex ib IIC T6 Gb-certified Unique Helmet Bone Conduction Headset PTE-129F uses skull bone vibration for sound transmission, and its unique shoulder strap design fits inside 99% of helmets. It has an environmental PU cable reinforced with Kevlar (sturdy and tensile) and an IP67-certified quick-release PTT (large button for emergency responsiveness), suitable for fire fighting, rescue, mining, chemical engineering, etc.Speaker Specification
