70 is a skull vibration type headset designed for theFrench MSAF1 fire helmets, using the high sensibilitybone conduction microphone and special structure horn,very convenient to install inside the F1 helmet.
Product features:
1. Using the advanced bone conduction microphone, with high sensitivity and low distortion, to make sure the voice is clear.
2. The microphone cover use silicon material with non-toxic and harmless,corrosion resistance, high temperature resistance.
3. Reasonable structure, convenient installation.
4. Even Joint circular connector with reasonable design, convenien for extract or insert.