The Fox 40 Classic Safety Whistle is the standard choice for personal safety and rescue professionals worldwide. The harder you blow, the louder the sound! Whistle has an 115dB sound power rating. It will be heard above ambient noise, the roar of engines, loud crowds, breaking waves and thundering gale force winds. The 3 chambers are designed to self-clear when submerged in water. There are no moving parts to freeze, jam or deteriorate. Whistle comes with a corrosion resistant steel split ring with a breakaway lanyard. Lanyard is a safety neck lanyard that releases with tension. Fox 40 lanyards are now 36" (91.4cm) in length 3/16" (5mm) rope style; woven with the Fox 40 brand that includes J-hook and button style spring-loaded adjustable cord lock. Whistle is available in multiple colors.