MacKenzie Cwrote a review of Petzl Reactik Plus Headlamp on August 17, 2016
Familiarity: I've used it several times
So this headlamp is amazing! It has it's own brain! So you can program it to use as much power for however long your hike or climb is. It also automatically adjusts it's brightness depending on the distance of what you are shining your light on. It has a rechargable battery that plugs into a USB. Great headlamp! purchased two!