The Bengal 60 whistle is similar to other high dollar pea-less whistles, without the high cost. Designed to be heard above ambient noise, the roar of engines, breaking waves and thundering gale-force winds. The chambers are designed to self-clear when submerged in water. There are no moving parts to freeze, jam or deteriorate. Comes in nine (9) different colors: Black, Green, Orange, Pink, Purple, Red, Royal Blue, Yellow, and Silver.