Fox 40 Pearl Sports and Safety Loud Marine Whistle, Black (2 Pack) 90 Decibel Unique Pitch Will Be Heard Above Ambient Noise, Loud Crowds, The Roar Of Engines, Breaking Waves And Thundering Gale-Force Winds Rugged Pealess Design And High Impact Abs Plastic Construction With No Moving Parts And Nothing To Jam, Break Or Freeze Perfect For Those Who DonT Need A Loud Piercing Shriek, Yet Want A Blast Above Man-Made And Environmental Noise Great For Sports, Emergency, Survival, And Tactical Purposes, Dog Training, And Much More Value Multi-Pack Includes 2 Fox 40 Black Pearl Whistles Ser escuchado por encima de ruido ambiental, alto multitudes, el rugido de motores, romper las olas y thundering Gale-Force vientos El Zorro 40 Pearl  es perfecto para aquellos que no tienen un fuerte Piercing shriek, pero quieren un Blast encima de provocados por el hombre y el ruido ambiental.