PURE BEAM SLIDE FOCUS: Pack two powerful beams into one and seamlessly transitionwith no halos or hot spotsbetween short and long-range viewing. COASTs focusing technology adapts to your need. The Ultra View Flood beam delivers edge-to-edge clarity in a broad circle of light, and the BULLS-EYE Spot beam sends a sharp ray of light with a transitional halo around the spot to increase the active viewing area. DUAL POWER RECHARGEABLE: Options to stay ready. With COAST dual power technology, you have the choice to power your light with USB-rechargeable batteries or with CR123 batteries. Charge directly from AC, DC, and USB using the USB insert on the flashlight.