Compact Sound Signal for Safer BoatingThe T-H Marine 3.5oz Marine and Sport Air Horn delivers a loud attention-grabbing sound when it matters most. Built for boating safety and easy push-button operation this compact horn is a practical choice for signaling nearby vessels drawing attention or creating an audible warning. Suggested for boats up to 65 feet USCG approved Push-button activation 3.5 oz net weight canister Made in the U.S.A.