47 grams on your head, 400 lumens down the trail
The lightest way to run, hike and camp through the dark, with three white colour temperatures and a red rear light built in.
- Just 47g complete, with the bracket and reflective headband fitted, so it disappears on a run
- 400 lumens throwing 132 metres for technical trail and route finding
- Three white colour temperatures (3000K warm, 4500K neutral, 6500K cool) for fog, general use and long-distance clarity
- USB-C rechargeable built-in 700mAh battery, charges from the same power bank as your phone
- 13 hours on 60-lumen Low and 45 hours on Ultralow for multi-night trips
- Red light in two levels plus flashing for map reading and alerting traffic behind you
- IP66 weatherproof and impact resistant to 1 metre for real conditions
- Two shaped buttons work by feel, even in winter gloves, with a 2-second lockout for your pack
Three white colour temperatures, one button to switch them
WARM, NEUTRAL OR COOL ON DEMAND - The MCT (Multiple Colour Temperatures) system gives you 3000K warm light that cuts through fog and rain without glare, 4500K neutral white for general trail use, and 6500K cool white for striking long-distance clarity on a fast descent. Each temperature comes from dedicated LEDs in both primary lights, so you keep full brightness when you change the tone.
A SINGLE MODE BUTTON - Tap the MODE button to move between colour temperatures while you keep moving. There is no menu to dive into and nothing to relearn at 3am, which matters when your hands are cold and your eyes are on the trail.
BUILT AROUND TWO PRIMARY LIGHTS - Both primary LEDs carry all three colour temperatures, giving an even, wide spread rather than a single hot spot. That broad field is what keeps peripheral footing visible when you are running technical ground.
47 grams complete, headband and all
WEIGHED WITH EVERYTHING ON - The 47g figure is the whole system: light, built-in battery, hollow bracket and headband together. For context, a single 18650 cell weighs around 45g on its own, so the entire NU25 MCT UL adds barely two grams more than one spare battery. Ultralight hikers counting every gram get real output without the penalty.
BUILT TO VANISH ON A RUN - The ultralight headband and hollow bracket keep mass low and balanced at the front, so there is little to bounce when you pick up the pace. After the first kilometre most runners stop noticing it is there.
PC HOUSING THAT TAKES A KNOCK - The PC construction is impact resistant to 1 metre, covering the drops that happen when you are fumbling with gear in the dark, while keeping the weight down where it counts.
400 lumens reaching 132 metres ahead
ENOUGH REACH FOR TECHNICAL GROUND - On High the NU25 MCT UL puts out 400 lumens and throws 132 metres, far enough to read a technical descent or pick a line off-trail before you commit to it. Peak intensity is 4,351cd, so the centre of the beam stays useful at distance.
A WIDE, EVEN FIELD - The TrueVision optical matrix lens passes over 94% of the light it collects across a wide beam, lighting your feet and your peripheral vision at the same time rather than punching one narrow spot. That spread is what keeps you sure-footed at speed.
STEP DOWN AND STRETCH THE RUNTIME - Drop to 200-lumen Mid for five hours, 60-lumen Low for thirteen hours, or 6-lumen Ultralow for forty-five hours. The light holds back automatically when it warms up, so output stays steady through a long session.
Two buttons you can run by feel
SHAPED FOR GLOVED HANDS - The Power and MODE buttons differ in shape and texture, so you can find the right one without looking, even in thick winter gloves. Power handles on, off and brightness. MODE switches colour temperature. One-handed operation is the whole point.
LOCKOUT FOR THE PACK - Hold both buttons for two seconds to lock the light, so it cannot switch on and drain inside your bag between sessions. Hold again to wake it.
RUNTIME AT A GLANCE - Press MODE while the light is off and the power indicator shows your level: four lights for 75 to 100%, down to one light below 25% when it is time to charge. The display holds for two seconds, then clears to save power.
Red light and a true ultralow for the quiet hours
RED WITHOUT CYCLING THROUGH WHITE - The red light is its own mode, reached directly rather than by scrolling past bright white that wrecks your dark adaptation. Run it for map reading, stargazing or moving quietly around a sleeping camp. Red High runs 10 hours, Red Low holds 26 hours, and a red flashing mode is there to mark yourself at night.
6 LUMENS THAT LAST 45 HOURS - Ultralow gives a gentle 6 lumens for up to 45 hours, plenty for reading in the tent, finding the zip at 3am, or stretching the battery across several nights between charges.
A SOFT CAMP LANTERN IN THE BOX - Slip the included diffusing stuff sack over the lamp and the spot beam becomes even area light for the tent or table. When you pack up, the same sack stows and protects the headlamp.
A headband that helps drivers see you
REFLECTIVE AND GLOW-IN-THE-DARK - The headband is woven with reflective thread and a glow-in-the-dark strand, so headlights pick you up from the side and you stay visible even when the lamp is off. On a dark road or trailhead it is one more way of being seen.
STAYS PUT WHEN YOU MOVE - The adjustable band locks to your head size and holds the light steady through a run, a scramble or a fast hike, so the beam tracks where you are looking instead of bouncing.
WASHED OUT AND BACK IN - The light lifts off the bracket, so the band can be rinsed after a sweaty summer effort and refitted in seconds.
Rated for rain, dust and the odd drop
IP66 WEATHER AND DUST RESISTANCE - The IP66 rating means the NU25 MCT UL shrugs off sustained rain, sweat and powerful water jets, as well as wind-blown trail dust. You can keep moving through a downpour rather than packing the light away.
IMPACT RESISTANT TO 1 METRE - The PC housing is rated to survive a 1-metre drop onto a hard surface, which covers the fumbles that happen in the cold and dark.
READY FOR A COLD START - With the battery sealed inside and USB-C charging, there are no loose cells to manage at a pre-dawn alpine start. Charge it the night before and it is ready when you are.
WHY THE NU25 MCT UL OVER A GENERIC HEADLAMP
Three Colour Temperatures, No Output Loss
Most headlamps give you one fixed white. This one switches between 3000K, 4500K and 6500K from dedicated LEDs, so you match the light to fog, trail or distance without dimming the beam.
Real Output At Ultralight Weight
Many sub-50g headlamps trade away brightness. The NU25 MCT UL holds 400 lumens and 132 metres of throw at just 47g complete, so you carry less without lighting less.
Nothing To Charge Separately
No proprietary cells to hunt down and no charger to pack. The sealed 700mAh battery tops up over USB-C from the same power bank as your phone, with a four-light gauge showing what is left.
A Camp Lantern In The Box
The included diffusing stuff sack slips over the lamp and turns the spot beam into soft, even area light for the tent or table, then stows the headlamp when you pack up.
WHERE THE NU25 MCT UL EARNS ITS PLACE
Trail & Ultra Running
47g that stays bounce-free at speed, 400 lumens for technical descents, and a red rear flash so drivers and runners behind you know you are there.
Ultralight Hiking
Barely two grams more than a single spare cell, with 132 metres of throw for route finding and a USB-C charge from your phone bank.
Camping
The diffuser sack makes a soft tent lantern, Ultralow runs 45 hours, and red mode keeps the camp dark-adapted on a midnight wander.
Travel & Everyday
Light enough to live in a daypack, recharges over the same USB-C cable you already carry, and locks out so it never drains in transit.
OUTPUT AND RUNTIME
| MODE | LUMENS | RUNTIME | DISTANCE | INTENSITY |
| High | 400 lumens | 2h 40min | 132m | 4,351cd |
| Mid | 200 lumens | 5h | 94m | 2,192cd |
| Low | 60 lumens | 13h | 51m | 662cd |
| Ultralow | 6 lumens | 45h | 13m | 43cd |
| Red High | 15 lumens | 10h | 7m | 13cd |
| Red Low | 5 lumens | 26h | 4m | 5cd |
| Red Flashing | 15 lumens | - | - | - |
| SOS | 400 lumens | - | - | - |
| Beacon | 400 lumens | - | - | - |
Runtime tested at 26°C using the built-in 700mAh Li-ion battery, per ANSI/PLATO FL1 2019.
Actual runtime varies with temperature and usage.TECHNICAL SPECIFICATIONS
| LED | Dual-core NiteLab MCT UHE LEDs plus auxiliary red light |
| Colour Temperatures | 3000K warm / 4500K neutral / 6500K cool white |
| Max Output | 400 lumens |
| Max Beam Distance | 132 metres |
| Peak Beam Intensity | 4,351cd |
| Battery | Built-in 700mAh Li-ion (3.85V), non-replaceable |
| Charging | USB-C charging port |
| Weather Resistance | IP66 (dust-tight and protected against powerful water jets) |
| Impact Resistance | 1 metre |
| Dimensions | 60.0mm x 33.0mm x 25.7mm (2.36" x 1.30" x 1.01") |
| Weight | 47g / 1.66oz (with bracket and headband) |
| Download Instruction Manual (PDF) | |
BATTERY STATUS INDICATORS
| INDICATOR | BATTERY LEVEL |
| 4 lights constant | 75% to 100% |
| 3 lights constant | 50% to 75% |
| 2 lights constant | 25% to 50% |
| 1 light constant | Below 25%, recharge soon |
Press MODE while the light is off to check the level.
The indicators show for two seconds, then clear to preserve battery.FREQUENTLY ASKED QUESTIONS
Can I use the headlamp while it is charging?
The built-in 700mAh battery recharges over the USB-C port. For a long, stationary task you can run it from a connected USB power bank, though for running and hiking most people simply charge it the night before and head out on a full battery.
Does it have a high-CRI or colour-rendering rating?
The NU25 MCT UL uses an MCT system, which means three selectable white colour temperatures (3000K, 4500K and 6500K) rather than a single published CRI figure. The warm 3000K setting renders trail detail naturally and cuts glare in fog and rain, while the cool 6500K gives the most contrast at distance.
Can I reach the red light without cycling through bright white first?
Yes. The red light is a separate mode, so you can switch straight to it without flashing bright white across your eyes. That keeps your night vision intact for map reading, stargazing or moving around a sleeping camp, and the red flashing setting marks your position to traffic behind you.
What's In The Box
- 1x NU25 MCT UL Headlamp - with bracket and reflective headband fitted
- 1x USB-C to USB-C Charging Cable - for charging from any USB-C source
- 1x Diffusing Stuff Sack - converts the headlamp into a soft camp lantern
Carry the lightest 400 lumens on the trail
GET YOUR NU25 MCT UL NOWYou’re Backed by Our 60-Day Ironclad Guarantee
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Try it for 60 days. If it’s not right for you, send it back.
We stand behind our gear. If you’re not happy with your purchase, just return the full package within 60 days and we’ll issue a full refund—no fuss, no forms, no hoops to jump through.
What Happens After You Order
- You’ll get an instant order confirmation email with your receipt.
- We’ll pack your order the next working day and send you a tracking number once it’s on the way.
- From the moment you order to the moment it reaches your hands, we’re here to keep you updated and supported.
When will I receive my gear?
- Singapore: Delivered to your doorstep in 4–6 working days.
- International: Arrive within 10–14 working days.
Returns and warranty
- Every product comes with a 1 to 3-year replacement warranty (depending on the item).
- If anything isn’t working right, just let us know. We’ll make it right.
FREE Gift with Purchase: Limited Edition Ember Shard Whistle
Spend $99 or more today, and we'll automatically include a limited-edition Glow-in-the-Dark Ember Shard Whistle when packing your order.
Charge it quickly under sunlight or your flashlight, and enjoy its subtle glow throughout the night—perfect for marking gear, emergency kits, or attaching to your bag.
Limited quantities. These will be swapped (at our discretion) to other gift items if shards are unavailable.
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