Alkaline Dual Power - Options to stay ready. With COAST Dual Power technology, you have the choice to power your light with USB-rechargeable batteries or with standard alkaline batteries. Pure Beam Focusing Optic - Pack two powerful beams into one and seamlessly transition—with no halos or hot spots—between short and long-range viewing. COAST’s patented focusing technology adapts to your need. The Ultra View Flood beam delivers edge-to-edge clarity in a broad circle, and the BULLS-EYE Spot Beam sends a sharp ray of light at a distance with a transitional halo around the spot to increase the effective viewing area. Dial in the shape of light you need for the situation. COAST’s TWIST FOCUS system makes it easy to move between spot and flood beams by simply rotating the head of the flashlight. .81 lbs