Aervoe LED Road Flare Kit A kit of 6 rechargeable LED emergency safety flares. No batteries required. Comes in a self-contained charging/storage case Each flare operates for 60 hours of use on a full charge. Holds a full charge for 90 days. Each flare has 9 flashing patterns (including S.O.S. Morse Code). Visible up to 1/2 mile. Waterproof to 50 ft., crushproof, and corrosion proof. 17.5" X 14.5" X 2.5" Meets U.S. DOT, MUTCD and NFPA requirements.