We wanted a running / hiking headlamp that was budget friendly so you'd have no excuse not to have a light sources (other than your phone) on night runs or sunset hike descents. This once ticks all the boxes - lightweight (55g), rechargeable (micro usb), waterproof, and plenty of runtime (up to 30 hours). Also serves as a great backup on overnights or one of those headlamps you just leave in your pack ready to go.