The LB Marketing Twin Power Ryder Gray Headlamp features a groundbreaking design with a maximum output of 800 lumens. This headlamp utilizes patent-pending technology that allows users to easily toggle between alkaline and rechargeable battery sources with the touch of a button. The built-in rechargeable battery is located in the head of the headlamp, while the rear battery cartridge holds three AAA batteries, ensuring uninterrupted illumination.Twist focus and comfort adjust straps enhance the versatility of this headlamp for a variety of hands-free uses.