Led Lenser HF8R Core 1600 Lumens Rechargeable HeadlampRegardless of what you need to accomplish before sunrise, after sunset, or in any dark situation Ledlenser makes it much easier when you are equipped with Ledlenser HF8R Core headlamp. Its innovative patent pending Adaptive Light Beam Technology allows automatic dimming and focusing, seamlessly adjusting the light output for the situation, so you can be totally hands free. It requires no manual control from you so you can keep focusing on what you are