This 2pc LED Road Flare Set includes IC chip control LED flash. Nine kinds of optional modes - flash, double flash, single flash, rotate flash, flash alternately, SOS distress, light(bright), light(dark), torch lighting. Press and hold the switch for 3 seconds to turn off everything. High-strength housing made of transparent plastic. Equipped with strong suction magnets. Anti-roll resistant, waterproof, oil resistant. Bright flashing allows flares to be easily seen. It also can be used for outdoor lighting. Requires two AA batteries.