Articles
Nitecore UT27 MB
Nitecore UT27 MB: A Red Light Head Torch Built for Trail Running
The Nitecore UT27 MB is a 74g running headlamp that keeps the UT27's 800-lumen, three-colour white light and adds a red light bright enough to move by: up to 150 lumens with a 70-metre beam. Here's what's new, how it sits alongside the UT27 MCT, and who it suits, from Australian bush tracks to overseas ultras.
Shop the UT27 MBWhat's new about the Nitecore UT27 MB?
The MB is built on the Nitecore UT27 MCT, so the 800-lumen maximum, 168-metre throw, 74g weight and dual battery system carry over. Two things are new.
A red light you can move by
Most headlamps use a small auxiliary red LED for close tasks and warning flashes. Nitecore puts typical auxiliary red lights at around 2–10 lumens. The MB makes red a main light, with Low (10 lumens), Mid (80) and High (150) settings. High reaches 70 metres, and there are also SOS and slow-flash modes.
Even higher colour accuracy
CRI (colour rendering index) measures how accurately colours appear under a light. Nitecore has lifted the warm light to CRI 98 and neutral white to CRI 85, so roots, rocks and wet ground look more natural in rain, fog and on technical terrain.
Why this red light head torch is different
On the UT27 MB, red is a working beam, bright enough that you may not need to carry a separate red light torch.
Red light output compared
*Nitecore's figure for conventional auxiliary red lights. UT27 MB figures are Nitecore ratings using the HLB1500 battery.
Nitecore designed the MB for red-light-only sections in trail races, which is useful to know if you are an Australian runner with an overseas ultra on the calendar. The best-known example is the 2026 HOKA UTMB Mont-Blanc. There, runners had to use a forward-facing red light through roughly 6–7 km of the Contamines-Montjoie Nature Reserve to reduce disturbance to nocturnal wildlife (Run Ultra's report on the rule). A 150-lumen red beam lets you see your footing and the track ahead through a section like that. In the launch video below, the presenter explains the MB name as a nod to the Ultra-Trail du Mont-Blanc.
Closer to home, a headlamp with red light this strong is handy at the campsite. Red Low is gentle enough for inside the tent and for stargazing under dark outback skies, while High gets you to the amenities without dazzling your neighbours.
Tip: Use red Low when you want to keep your night vision, and flick to white briefly to check colour-coded trail markers. If you are racing, check your event's current mandatory gear list, as rules vary between races and years.
Colour temperatures, battery and controls
Colour temperature, measured in kelvin (K), describes how warm or cool light looks. Here is how Nitecore suggests using each white option:
3,000K warm · CRI 98
Fog, rain and snow, such as misty high-country mornings
4,500K neutral · CRI 85
Technical terrain such as steep or muddy slopes
6,500K cool · CRI 73
Broad, open trails and wide fire trails
Turbo (800 lumens) is there for spotting distant markers and junctions. The included HLB1500 pack charges through its own USB-C port in about 1 hour 30 minutes. For remote trips, the MB also runs on 3 × AAA alkaline or Ni-MH batteries, which are easy to pick up almost anywhere in Australia.
Two buttons run everything:
- Long press W for neutral or cool white, or long press Y for warm.
- Short press to change brightness.
- From off, double press either button for red.
- Long press both buttons to lock the light for carrying.
Battery safety: Use only the HLB1500 or AAA alkaline/Ni-MH batteries (never 10400 lithium cells), and don't mix battery types. In an Australian summer, don't leave the headlamp in a hot car, as Nitecore advises against prolonged exposure above 60°C.
Highlights and tips
- A 150-lumen red beam for moving, not just signalling
- Three white colour temperatures, with CRI 98 warm light
- Just 74g including the battery
- Rechargeable via USB-C, with AAA backup for remote trips
- Up to 21 hours on red Low and 14h 30min on white Low
- IP66 weather resistance and 1 m impact resistance
Getting the most from your UT27 MB
- Practise the button combinations at home before your first night run.
- Use Low or Mid for most running, and save Turbo for spotting markers, as it steps down with prolonged use to manage heat.
- For long events or multi-day walks, pack spare AAA batteries or a second HLB1500 battery pack.
- Lock the headlamp before packing it so it can't switch on in your bag.
UT27 MB vs UT27 MCT
| Feature | UT27 MB | UT27 MCT |
|---|---|---|
| White light | Warm, neutral and cool | Warm, neutral and cool |
| CRI (warm / neutral / cool) | 98 / 85 / 73 | 97 / 83 / 73 |
| Max output and beam distance | 800 lumens, 168 m | 800 lumens, 168 m |
| Max runtime (white Low) | 14h 30min | 14h 30min |
| Red light type | Main red light with Low, Mid and High | Auxiliary red LEDs with constant-on |
| Red flashing modes | SOS and slow flash | Slow flash |
| Power | HLB1500 or 3 × AAA | HLB1500 or 3 × AAA |
| Weight | 74g with battery | 74g with battery |
| Protection | IP66, 1 m impact | IP66, 1 m impact |
| Best for | Races with red-light rules, campsites and night-sky use | Everyday trail running, bushwalking and camping |
Both headlamps share the same white-light system, so the choice comes down to how you use red light. Choose the UT27 MB if a strong, adjustable red beam matters to you. Choose the UT27 MCT if you mainly run and walk on white light. Prefer separate white and warm beams? The dual-beam UT27 2024 and UT27 Pro are also available.
Who is the UT27 MB for?
Based on its specifications, here's where the UT27 MB fits as a trail running headlamp in Australian conditions and beyond:
Need long-range output for work or spotting? The HC75 UHE is built for that job.
The UT27 MB is launching at Nitecore Australia
Free shipping on orders over $50 and local warranty service. Not ready yet? Join our newsletter on the homepage for new releases.
Nitecore UT27 MB FAQs
Does the UT27 MB meet UTMB's red-light rule?
Nitecore designed the MB's forward-facing red light, rated at up to 150 lumens, for red-light-only sections in trail races. Rules can change between editions, so always check your event's current mandatory gear list before race day.
Is the UT27 MB a good head torch for running?
Yes. For trail running, its specifications line up well: 74g including the battery, a wide flood beam with 100–500 lumen working levels, Turbo for picking out markers, and a red mode for races with red-light sections. The even flood beam also suits pre-dawn runs around your neighbourhood.
Can I use rechargeable AAA batteries?
Yes. Nitecore lists AAA Ni-MH rechargeables and AAA alkalines as compatible backups to the HLB1500 pack. 10400-size lithium cells are not compatible and shouldn't be used.
How long does the HLB1500 battery take to charge?
Nitecore quotes about 1 hour 30 minutes from a 5V/1A USB source. The indicator on the pack glows red while charging and turns green when it's full.
Is the UT27 MB waterproof?
It's rated IP66, meaning it's dust-tight and protected against powerful water jets, so rain, sweat and dusty tracks are no problem. Don't submerge it. If it's exposed to seawater, remove the battery, rinse it with fresh water and let it dry fully before use.
Related Posts
