Zebralight H52w

The Zebralight H52w is an ultralight headlamp running on a single AA battery, weighing 32 grams without the cell. It uses a neutral white LED rated at 4400 K with ten brightness levels spanning 0.01 to 280 lumens — the low end covers reading a map at night without blowing out your night vision, the high end gives short bursts of longer-range illumination. The optics combine spot and flood output, so it works both for walking a trail and for close-range camp tasks. The housing is rated IPX7, meaning it should survive brief submersion to one metre without damage. It has no red-light mode and no lock-out function to prevent accidental activation in a pack, and it does not charge via USB — it relies solely on a swappable AA cell, which is an advantage on long trails where AA batteries are easy to resupply, but a step behind rechargeable models that only need a power bank. The low weight and AA power source make it a favorite among ultralight hikers specifically.