Light Enough to Forget. Built to Last Ten Years.

For most service work, yes — including sustained shifts. The lumen number on the box is rarely where the lamp actually runs in real conditions. The bulk of electrical, mechanical, plumbing, and facility work happens at 60–180 lumens — close-up tasks where you're reading wiring, fittings, schematics, or terminal blocks. That's modes 3 (180 lm) and 4 (60 lm) on the PRO 700.

The 725 lumen mode is there for the moment you need to read a switchboard at distance, light up a crawl space, or scan a darkened plant room. You don't run at full output the whole shift — on any lamp, that's a runtime problem, not a feature. The honest question isn't "is 725 enough", it's "how often will I need more than 725 for sustained periods", and for most service trades the answer is "rarely, and not for long".

If your work routinely takes you into larger spaces, distribution yards, tunnel installations, or extended night shifts where you need a charged spare on hand, the PRO 1200 gives you that — twice the peak output, two batteries in the box. Either lamp is honest about what it does.

Honest answer: it depends on how often you'll be running out of battery on the job. The price difference between PRO 700 and PRO 1200 buys you one extra 18500 cell in the box, and a higher peak output (1,225 vs 725 lm). Same housing, same band, same red LED, same charging.

Pick PRO 1200 if: you do long shifts where charging isn't an option, you work through extended winter nights with limited daylight hours on site, you regularly need higher peak output for distribution, tunnel, or larger-area work.

Pick PRO 700 if: most of your shifts are 1–4 hours of active lamp use, you can charge between jobs or in the van, 725 lumens covers what you actually need, and you'd rather put the difference toward a spare 18500 cell when (and if) you need one.

You don't outgrow the PRO 700. A spare 18500 doubles every runtime number with a 10-second swap, no tools.

Operating range is −25°C to +60°C. The aluminum heat sink handles cold without issue. Lithium cells lose capacity below roughly −10°C — that's true of every battery on the market — and with the cell on the lamp head, it's exposed to ambient temperature.

The straightforward fix in deep cold is a spare 18500 in your inner pocket. Swap to the warm cell when the running cell starts to weaken; the cycle continues — running cell on the head, warm spare in your pocket. For sustained operation in extreme cold, the PRO 3100 is designed differently: external battery pack on a cable, kept inside your jacket. Different lamp for a different problem.

The PRO 700's click-release headband lets you take the lamp off the band tool-free and snap it onto a hard hat bracket, chest rig, or any Stormlight accessory. Seconds, no tools. Built for professionals who move the lamp between mounts as the work changes — from headband at the van, to hard hat on site, back to headband for paperwork at the end of the shift.

The SPORT 700 uses a fixed low-profile band instead — tighter against the brow, less bounce during fast movement, but no tool-free release from the band itself. Different priorities for different users. Both lamp heads have the same GoPro-compatible feet, so accessory mounting is identical between the two.

Same hardware platform, same 725 lumen output, same six white modes, same red circuit, same battery, same charging, same multi-charger compatibility. The differences are the headband and the warranty framework. PRO uses the click-release headband with white branding and operates under a separate warranty structure for professional and commercial use. SPORT comes with the fixed low-profile headband (black 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 lamps in this category 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 be marketed at one number while in practice it stabilizes at a much lower output within the first few minutes and runs at that level for most of the rated runtime. We've seen significant drops between the headline figure and what the lamp actually delivers once it's warmed up. Technically FL1-compliant. Practically misleading.

We measure differently. Our 725 lumens is the output the lamp delivers at operating temperature — once the LEDs have stabilized and the aluminum heat sink is doing its job — and it's the output we sustain across the rated runtime. Same for every other mode. The number you read on the box is the number that hits the work site.

The other concrete differences:

Aluminum heat sink at the rear. This is what lets the lamp hold its rated output. A polymer front for impact resistance, aluminum at the rear pulling heat away from the LEDs. The lamp is built to deliver the lumens it claims for the duration it claims them.

Standard 18500 cell, not a sealed pack. The PRO 700 runs on an 18500 Li-Ion cell — the same cell as the PRO 1200 and SPORT 1200, available as a spare. Many lamps in this price band use proprietary integrated battery packs that you can't replace and can't carry a spare for. When that pack fails, the lamp is finished.

Repairability. Every part is user-replaceable — the battery, the lens, the switch, the circuit board, the headband. No soldering, no proprietary screws, no service centre. Ten-year part availability on every model we ship.

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 hour three of a shift, in the rain, when the cell is half-spent.

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. The click-release headband releases the lamp tool-free for swapping between mounts in seconds.

For mounting on Stormlight's own click-release accessories, our spring-loaded receivers grip the same GoPro-compatible feet and won't release on impact or vibration. Same feet on the lamp, better receivers on the accessories.

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

Yes, in carry-on. The 18500 cell is roughly 2,600 mAh at 3.7V — about 9.6 Wh. Well under the 100 Wh limit for lithium-ion batteries in cabin baggage on every major airline. Always pack lithium batteries in your carry-on, never in checked luggage — that's the rule for any lithium battery, not specific to ours.

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.