This emergency whistle emits a louder sound than traditional whistles due to double tubes which can provide up to 150 decibels and be heard from a far distance! It’s made with stainless-steel construction and exceptional environmental adaptability due to no built-in pea so it will not harbor mold or breed bacteria. It’s great for use in any dusty or dirty water environment. It’s also equipped with a convenient keyring. Customize it with a company name or logo and hand out it at you next promotional event!