Three chamber pealess. 110dB. Small and flat design with no pressure points. Chambers are designed to self clear when submerged in water. Relied upon by NATO Forces, U.S. Army, S.O.L.A.S., American Red Cross, and U.S. And Canadian Coast Guard. Black cord lanyard. Thermoplastic construction. Color: Black. Clam packed. Country Of Origin: Canada UPC: 066143095334
