Explosion Proof Dual Function Headlight - Class 1 Division 1 Headlamp - High/Low Spot Beams Class I Division 1&2 A,B,C&D, Class II Division 1&2 E,F&G, Class III, Class I Zone 0, T3 Temp Rating Single CREE LED that produces 120 lumens of light output 135 hours of run time in low mode, 45 hours of run time in high mode Mounts on head using an Elastic Head Strap or a Rubber Hard Hat Strap Powered by Three AAA Alkaline Batteries