Princeton Tec EOSR Headlamp Tactical EOS: Features easy-to-change lens filter system for night activities: red for preserving night vision, blue for blood tracking, and green for hunter safety. Turns on in low. EOS II: Industrial version of EOS. Includes rubber strap for hard hat use and velcro and nylon strap. Intrinsically Safe UL Rating Class I Division 1 Groups A, B, C, D. UL Temp. Code T4.