Waterproof marine safety whistle quality Nexus ( No Pee, No Jams ). Bright orange and ideal for all watersports including Scuba diving. Also an excellent whistle for walking, hiking etc. The whistle also has a built in belt clip. Extremely loud and easy to blow when cold / wet and capable of producing over 100 decibels of sound. This whistle meets the new safety standard ISO 12402-8. Quality nexus whistle. Please see our other whistles we have a good selection.