670 Real Lumens. 83 Grams. One Piece.

Because we'd rather under-promise than join the industry's inflation race. The lamp is rated 600 lumens on the box. Lab measurement at operating temperature came in at 670 lumens — held flat through the rated runtime.

Most of the industry does the opposite: print the highest 30-second peak the lamp will ever hit, knowing the real number on the trail is a fraction of it. We print the conservative number and let the measurement speak.

Yes. Integrated doesn't mean sealed-for-life. The aluminum housing opens, and the battery is a standard replacement part in our store — along with the lens, the circuit board, and both covers.

The battery is rated for a minimum of 500 charge cycles to 80% capacity. For a lamp charged once or twice a week, that's years of use before replacement becomes relevant. When it does, you swap the battery and keep the lamp — the opposite of how most integrated headlamps are built.

Both, in one lens. The optics combine a wide, even work light with a focused throw: comfortable, shadow-free light at arm's length for close work, and enough reach to scan the trail or the yard when you lift your head.

That combination is why the same lamp works for an electrician at noon-dark in January and for the evening run in the forest. It's a generalist beam, on purpose.

The aluminum housing doesn't care about cold — the battery is the question, as with every headlamp on the market.

The honest number: at −15°C, runtimes drop by roughly 20% across all modes. Because the battery is integrated, you can't move it to a warm pocket the way you can with our external-battery lamps — that's the trade for one-piece simplicity. Plan with the 20% margin, store the lamp indoors between uses, and it does its job all winter.

If your use is long hours at high output in deep cold, the STORM 3100's external battery system — which you can keep warm inside your jacket — is the better tool.

IP67 — the rating means full dust protection and survival of submersion in 1 meter of water for 30 minutes. That's not "rain resistant"; it's drop-it-in-the-stream-and-fish-it-out waterproof.

Rain, wet snow, condensation from working hard in the cold — none of it reaches the electronics. The seal is part of why the housing is machined aluminum rather than snap-together plastic.

Yes. The lamp sits on the headband with the Stormlight click mount. Unscrew that mount, and the lamp attaches to any standard GoPro-compatible mount — including our simple helmet mount, which is the accessory we recommend if you work in a helmet or ride.

Pick by speed, not by budget. At walking pace, working pace, and calm skiing or riding pace, the STORM 600 is all the lamp you need — simpler, lighter on the head, and always ready.

The moment your activity involves reading terrain at speed — fast descents on skis, quicker trail riding, technical sections — 670 lumens becomes the limiting factor. That's exactly where the STORM 3100's 3,150 lumens and external battery system earn their price. We'd rather you buy the right lamp than the bigger one.

Two things: what the lumen number means, and what happens when something breaks.

Most headlamps at this price are rated to the industry's FL1 standard, which measures output 30 seconds after activation — before thermal throttling sets in — and allows runtime to be counted until output has fallen to 10% of that reading. A lamp can legally claim a number it only delivers for the first few minutes. Our 670 lumens is measured at operating temperature and held flat through the runtime. The box says 600; the lamp delivers more.

And when something eventually wears out: most lamps in this class are glued-shut consumables. The STORM 600 opens, and every part — battery, lens, board, covers — is available as a spare for ten years. You can find cheaper lamps with bigger printed numbers. You won't find one built to be repaired like this.

Material and manufacturing defects under normal use, anywhere in the world. If something fails because of how it was made or what it was made of, we replace or repair it — one form, one conversation, one shipment.

The warranty doesn't cover physical damage from drops, crashes, or impact, or wear on consumable parts like the headband. For those, we offer the Repair Service: every part is replaceable, for a fraction of the cost of a new lamp.

Read the full warranty →

Yes, in carry-on. The integrated battery is 8.5 Wh — far under the 100 Wh limit for lithium batteries in cabin baggage on every major airline. Devices with installed batteries this size travel without restrictions. As with any lithium battery, keep it in your carry-on rather than checked luggage.

Worldwide air shipping, 2–7 days to most destinations. All duties and import taxes are included in the price you see at checkout — nothing extra to pay on delivery.

14-day return window from the day the lamp arrives. If something's wrong or it's not what you expected, ship it back and we refund in full.