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• Nylon Head Straps x 3 AA Batteries Concentrating Headlights x Features and Benefits: LED: US Cree XPE (Q5) High Output White LED Maximum Output: High Output White LED, 2 Output Modes: 250 Lumens Power: 3.0 W (3.7 V, 850 mA ± 5%) Lighting Type: Computer-controlled Acrylic Optical Convex Lens Brightens Light Beam Material: Durable ABS Plastic Case Switch: 3 Position (On/Flashing/Off) Switch Dimensions: 76 mm (Length) x 82 mm (Width) x 58 mm (Height) (± 5%) Weight: 110 g (No Battery) Battery Type: AA Batteries (Alkaline battery, heavy-duty battery, or rechargeable battery) x 3 Lighting Time: Battery Life (100 → 0%) 7 → 8 hours (Full Power), 14 → 15 hours (Flashing) Waterproof/Shock Resistant Design Accessory: Adjustable High Quality Nylon Straps (Headband)