Supreme Lighting SL-016A 12 volt portable amber LED warning light with 9 flashing patterns, with magnetic base Long life LED's, no required maintenance, no bulbs to replace Comes with a recharable battery, and car cigarette lighter charger plug, and also for 110 volt plug-in charger Once the battery is charged it can be attached to any metal surface with its magnetic base Battery can last up to 10 hours of run time Completeley waterproof, and visable uo tp 1/3 of a mile