Finally! A new standard aims to provide a more realistic idea of how much light you can expect and for how long.
Figuring out the Problem: Headlamp packaging has a lot of tough-to-decipher numbers and icons, but there are two specs that really matter: lumens and run time. Most headlamps have between 25 and 500 lumens, which measure how much light is emitted (aka brightness). Run time (also referred to as burn time) is how long the light will last on a full set of batteries at a set brightness level …