Waterproof and dustproof (rated at IP 67), as well as resistant to bleach, alcohol, solvent, white spirit, fuel, paint, adhesive, grease, and hydraulic gear oil. It's crush proof (175lbs / 80Kg). It operates at extreme temperatures ( -22f /-30c to 140f / 60c ) It's approved for use in ATEX zone 2 / 22 and HAZLOC Class I Div 2 / Class II Div 2 explosive environments. Designed it to shed even diffused light with no hotspots. Uses 2x AA batteries.