Personal warning beacon, smaller & lighter than traditional e-flares• Intensely Bright - Can be seen for over 1/2 mile away without the night vision, point fixation and distance judgement problems associated with strobe and incandescent lights• Portable - Unit is 6" tall and weighs under a pound with 4 "AA" batteries, making it easy to carry or store anywhere• Simple To Use - Just twist the lens to turn on or off. Place unit(s) around to provide a highly visible warning and safety zone for people, work areas, hazards and accidents• Durable - Waterproof and dust proof, plus unit will survive a 3-foot drop onto a concrete surface• Double the Safety - Provides safety by ensuring maximum 360° visibility. Unlike pyrotechnic flares, there is no risk of fire or explosion, and there are no toxic fumes or residue• Easily attaches to belts, clothing, vehicles, traffic cones or signs• Includes lanyard for easy transport• Waterproof and dustproof• HAZMAT compliant for use in Zone 1, Level 1 hazardous areas