Light That Goes As Far As the Work Takes You.

Yes — and the weight is exactly the point. The 115 grams is the entire electronics package: full aluminum housing, four high-output Cree LEDs, four-lens optical system, PCB, and the IP67-rated USB-C port. The reason it's that light is that we moved the heavy part — the battery — off the head and into a separate 380-gram pack you keep in your jacket, your vest, or on your hip belt.

For an eight-hour shift, that means no neck fatigue, no headache after the work, and a lamp that still delivers 9,050 real lumens when you point it at the terrain.

Yes — that's one of the reasons the battery is external. With a 115-gram lamp head and a 380-gram pack worn on a hip belt, vest, or in a pocket, weight distribution stays low and centered. There's nothing heavy bouncing on the front of your head on rough terrain or technical sections.

The click-release on both ends of the 1.5 m command cable means you can swap mounting positions in seconds without tools.

Wide, even flood — not a tunnel-vision spot. The four-lens optical system spreads the 9,050 lumens across roughly a 15°–30° field, with no hot centre and no dead zones at the edges of your peripheral vision.

This is deliberate. For high-speed work in the dark, you need to read terrain at the edges of your field of view, not just what's directly in front of you. A spot beam at 9,050 lumens would be blinding in the centre and useless to the sides. The four-lens approach gives you the same total output spread across a beam shape that matches how your eyes actually scan terrain in motion.

Operating range is −25°C to +60°C. The full aluminum housing handles cold without issue — the question is the battery.

Lithium cells lose capacity below roughly −10°C, which is true of every battery on the market. The difference with the PRO 9000 is that the battery pack is external and the standard cable is 1.5 m. In deep cold you keep the pack inside your jacket where your body heat keeps the cells warm and the lumens where they should be. The lamp head sits on your helmet or headband; the pack stays warm; you get the rated 9,050 lumens instead of a derated number you didn't expect.

This is the practical reason the lamp head and battery are separate. It's not a design choice — it's how a high-output headlamp works honestly in real winter conditions.

Same hardware platform, same optics, same battery, same runtime. The differences are the headband colour and the warranty framework. PRO uses a different headband and operates under a separate warranty structure designed for professional and commercial use. SPORT comes with a black headband with yellow Stormlight branding and a 2-year international consumer warranty.

Pick PRO if the lamp is a tool you depend on for paid work. Pick SPORT for personal sport, recreation, and adventure.

The biggest difference is what the lumen number actually means. Most flagship headlamps at this price point are rated to ANSI/PLATO FL1 — the headlamp industry's measurement standard. FL1 measures output between 30 seconds and 2 minutes after activation, and defines runtime as the time until output drops to 10% of that initial reading.

That sounds reasonable until you understand what it allows. A high-output LED hasn't yet thermally throttled at the 30-second mark — it's still drawing peak current before the heat catches up. So a lamp can claim 10,000 lumens and a 1-hour runtime, while in practice it delivers 10,000 lumens for the first few minutes, drops to 30–50% within the first half hour, and spends most of the rated runtime delivering a fraction of the headline number. Technically compliant. Practically misleading.

We don't measure that way. Our 9,050 lumens is the output the lamp delivers at operating temperature — once the LEDs have stabilized and active airflow cooling is in steady state — and it's the output we sustain across the rated runtime on full power.

The other concrete differences:

Repairability. Every part is user-replaceable — the cable, the battery pack, the LED, the optics, the headband. No soldering, no proprietary screws, no service centre. Ten-year part availability on every model we ship.

External battery on a clean platform. Click-release on both ends, GoPro-compatible feet, command cable as a separate user-replaceable part. The lamp grows with your gear instead of being locked to one configuration.

You can find lamps with bigger headline numbers for less money. We don't compete on that. We compete on what those numbers actually deliver in your hand at −15°C three hours into a shift.

Email us with what's wrong. We send you the replacement part with simple instructions. Most repairs are user-completable in under five minutes — click-release means no tools.

If the failure is something you don't want to handle yourself, you ship the lamp to us and we handle it. No service-centre network, no authorised repair shops. One channel, direct.

Parts are guaranteed available for ten years from the model's launch. More about repair →

Yes. The lamp head has GoPro-compatible feet built in, so any standard GoPro mount — helmet adapter, handlebar mount, chest rig — works out of the box.

For mounting on our own click-release system, we use a four-tab connection (the GoPro standard uses two prongs). Both work. The four-tab keeps holding the day one tab breaks, which is the practical reason we engineered it that way.

Helmet brackets, handlebar adapters, and additional accessories are coming this autumn.

Yes, in carry-on. The 9,800 mAh / 7.4V pack works out to about 72 Wh, well under the 100 Wh limit for lithium-ion batteries in cabin baggage on every major airline. Always pack it in your carry-on, never in checked luggage — that's the rule for any lithium battery, not specific to ours.

One note: most airlines limit you to two spare lithium-ion batteries between 100–160 Wh, but rules below 100 Wh are more relaxed. The PRO 9000 pack sits comfortably in the relaxed zone, but if you're travelling with multiple battery packs, check your airline's specific policy in advance.

Worldwide air shipping from Hong Kong, 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.