A survival situation is often accompanied by a need to be found, and that is why the BG Ultimate Survival Whistle is an important part of any kit. This Bear Grylls whistle features 120 decibels, making it one of the loudest whistles on the market. Made by Fox40 exclusively for Gerber, this whistle features no moving parts and a soft-touch rubber overmold. Includes a paracord breakaway lanyard.