SIMPLY PULL HANDLE & PUSH FOR LOUD BLASTS. MEETS U.S. COAST GUARD REQUIREMENTS FOR BOATS UP TO 65 FT;RECOMMENDED FOR. COACHES, BOATERS, OFFICIALS, MOTORIST, LIFEGUARDS, HIKERS, BIKERS, SPORTS FANS & MORE. EMITS NO HARMFUL GASES TO ENVIRONMENT. ECONOMICAL & REUSABLE, NO REFILLS NEEDED;UPC : 752080007218Shipping Dimensions : 8.95in X 6.50in X 3.00inEstimated Shipping Weight : 1.0514