Waterproof safety whistle (No Pee, No Jams). Bright orange with solid 4mm black nylon cord and a golf ball stopper. A marine cord lock for a secure attachment to the wrist if required. Ideal for scuba diving and great for walking or easily attached to a Life Jacket, BC jacket or clothing etc and ideal for all watersports. The whistle also has a built in belt clip. Extremely loud and easy to blow when cold / wet meeting the new safety standard ISO 12402-8. Quality nexus whistle. Please see our other whistles we have a good selection.