I bought these so my husband could replace his old head lamp. He was tired of the batteries always being dead everytime he went to use it and he was always running out of the specific batteries he needed to power his old head lamp so he never had the batteries when he needed it most. He asked me to find him some head lamps that were rechargable with some extra features but we were having trouble finding rechargeable headlamps that also had red lights for him to use while hunting. These are perfect. They came with two in the package which is great because he can keep one in his truck and one with his sports gear. He uses them while working on his ATVs, while fishing and camping, doing home repairs, hunting, fixing his truck, and anywhere else he needs light. He loves them.