This smart hands-free head torch has 6 bright LEDsso it is bound to be strong. With 80 lumens of brightness and a beam range of 32 metres, it helps light up dark places for night runners, cyclists, dog walkers and professional tradesmen. For ease of operation and comfort it has a front switch and two-way adjustable strap to fit any head size. A battery pack on the back of the headband holds three AAA batteries (supplied), which have a maximum possible burn time of 20 hours. Even when batteries are fitted the E41 weighs only 120gso it is light enough to be worn for sustained periods.