SPECS: Dimensions: 2.5 in. x 1.1 in. x 0.5 in. Weight (with batteries): 3.3 oz. DESIGN & DETAILS: Designed for use at the campsite, on the trails, on the job or at home IPX4 water resistant design for use in the elements High/low setting options Wide, flood light type beam Blended poly/plastic headband Battery powered with 3 AAA or rechargeable CORE batteries Compatible with Petzl(R)'s CORE USB charger kit (not included) TECH SPECS: Output: 250 lumens (high), 5 lumens (low) Beam distance: 50 meters (high), 10 meters (low) Run time: 60 hours (high), 220 hours (low)