TWIST FOCUS OPTIC: The simple TWIST FOCUS system goes from an Ultra View Flood Beam to BULLS-EYE Spot Beam. DUAL POWER RECHARGEABLE: Operates on rechargeable and alkaline batteries so you're never without power. Rechargeable batteries can be charged inside or outside of the headlamp with FLEX-CHARGE. SPECS: Light output: 700 lumens (high), 400 Lumens (medium),110 Lumens (low). Beam distance: 133 meters (high), 106 meters (medium), 52 meters (low). Runtime: 2.15 hours (high), 14 hours (low). TOUGH & RELIABLE: IP54 rated design for water resistance and durable aluminum body for 1-meter drop protection. Backed by the COAST Lifetime against defects in materials and workmanship. INCLUDED ACCESSORIES: li-ion battery pack, USB charging cord