Brass Gold Boatmans Whistle - Traditional Boating & Sailing Whistle. Color: Brass (Gold) Plated. Gold Chain Included. Also Known as a Boating & Sailing Whistle. Small Hole Contained To Place on Neck Strap & Key Rings.California Proposition 65 WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects and other reproductive harm.