Bone conductive microphone located inside the helmet. Unique fastening strap mounts into most kinds of helmets, perfect for fire fighters, Gas mask wearers etc.
Advantages * The superiority of reducing full-spectrum noises * Great speech intelligibility * Comfortable fit * Fire-proof cable and headset, strong and durable.
Construction: a. Kevlar reinforced PU cable, more sturdy which is cold and heat resistant. b. 1 speaker type and 2 speakers type for choice c. Clear voice picked up from the skull, d. Nexus 4 pole connector,match with Power-Time IP67 D type PTT as well as most popular PTT adapters