[2012.01.20] Announcing Bone conduction helmet “A-hum” (Patented, PCT applied) Joint development: West Nippon Expressway Maintenance Kansai Co.Ltd.

Title

The Optimum bone conduction communication system that a helmet becomes a speaker by placing the bone conduction oscillator to the helmet, thus it allows you to clearly hear under the noisy environment and people near you can hear the voice so that a quick response is possible.