The Princeton Tec EOS II is an intrinsically safe headlamp designed for industrial, rescue, and hazardous work environments. Its 170 lumen spot beam offers high and low output modes, while the press and hold off function helps prevent accidental shutoff. The EOS II runs for up to 100 hours on three AAA batteries, reaches 65 meters, and is IPX7 waterproof to one meter. It also includes a rubber hard hat strap, 3M Dual Lock, and standard nylon headstrap.