Police Security's Twin Power Flashlight introduces groundbreaking, patented technology that redefines traditional Dual Power functionality. Unlike standard Dual Power flashlights that require two separate battery cartridges, the Twin Power flashlight operates seamlessly with a single cartridge. This innovative cartridge holds a built-in 10850 rechargeable battery for primary power, along with 4 AAA alkaline batteries for backup. With the touch of a button, you can easily toggle between alkaline and rechargeable battery sources, ensuring uninterrupted illumination whenever you need it. The flashlight is equipped with battery level indicators, giving you peace of mind knowing you'll never be left in the dark.