Silva's Trail Runner Free is the minimalist head torch for those who value agility and minimum weight. The lamp is connected to the battery with a flat tangle-free cord and the lamp and battery are well balanced on the head. The battery pack can be used both with a rechargeable battery or with AAA batteries. We strongly recommend that you use AAA batteries to maximise time on the trails as you get a use time of an entire 25 hours with max brightness and an entire 70 hours at the lowest level. The lamp is also super lightweight with a weight of only 119 grams for both battery and lamp. This is the perfect choice for all long-distance athletes!