Princeton Tec Byte Headlamp (Gray/Blue)

A first-light run, an evening walk with the dog, camp cooking after dark—the gray/blue Byte Headlamp from Princeton Tec lets you see what you're doing in low light, and it's so small and lightweight you'll barely know you're wearing it. A single push-button switch turns the Byte on and off and cycles through two levels of white light and a red glow that helps preserve your night-acclimated vision. This efficient unit achieves surprisingly long runtimes on two AAA batteries: 3 hours on white light high power, 80 hours on white low, and 100 hours on red. There's a lockout option to make sure you don't accidentally turn the light on in transit. The Byte comes with an adjustable elastic headband and weighs just 2.3 ounces.