The Nitecore UT27 is a lightweight trail running headlamp equipped with variable CRI multiple colour temperature LEDs, offering three distinct colour temperatures and CRI options. It delivers a maximum output of 800 lumens with a beam distance of 168 metres, and features dual power source compatibility. Equipped with two NiteLab Quad-core MCT UHE White LEDs, it offers primary lights in 6500K cool white (CRI 73), 4500K neutral white (CRI 83), and 3000K warm light (CRI 97), complemented by an auxiliary red light source with constant-on and slow flashing. An optical dual-lens system with TrueVision+ technology ensures a uniform and soft wide-range flood beam. Power is supplied by either an included Nitecore HLB1500 rechargeable lithium-ion battery pack with USB Type-C recharging (providing a maximum runtime of 14.5 hours), or three AAA batteries. Additional features include a glow-in-the-dark battery compartment, dual switch design, power indicators, and Advanced Power Cut-Off technology for ultra-low standby consumption. Built from durable PC materials, it has an IP66 ingress protection rating and 1m impact resistance, with a 90ยฐ adjustable tilt angle and a comfortable, breathable headband.
Features
Variable Colour Temperatures: Equipped with primary lights offering three colour temperatures: 6500K (CRI 73) cool white, 4500K (CRI 83) neutral white, and 3000K (CRI 97) warm white.
Dual Power Options: Includes a HLB1500 Rechargeable Li-ion Battery Pack (1500mAh) with a built-in USB-C charging port, and is also compatible with 3 x AAA batteries (not included).
Auxiliary Red Lights: An auxiliary red light supports constant-on lighting as well as a flashing mode.
Glow-in-the-Dark Battery Compartment: Features a glow-in-the-dark battery compartment for easy battery replacement and location.
Package Includes
1 x Nitecore UT27
1 x Nitecore HLB1500 Rechargeable Lithium-ion Battery Pack
1 x USB Charging Cable (USB-C to USB-C)
1 x Headband
1 x Diffusing Stuff Sack
1 x Clip
1 x User Manual
Key Information
Feature
Details
Primary Light Source
2 x NiteLab Quad-core MCT UHE White LEDs
Auxiliary Light Source
1 x Red Light Source
Power Sources
1 x Nitecore HLB1500 Rechargeable Lithium-ion Battery Pack or 3 x AAA Batteries
Recharging Method
USB Type-C
Material
Plastic
Warranty (Headlamp)
5 years
Warranty (Battery Pack)
1 year
Warranty (Accessories)
1 year
ANSI/PLATO FL1 Specifications
Feature
HLB1500 Battery Pack
3 x AAA Batteries
Maximum Light Output
800 lumens
Maximum Runtime
14.5 hours
8.5 hours
Maximum Beam Distance
168 metres
Peak Beam Intensity
7124 candela
Impact Resistance
1 metre
Ingress Protection Rating
IP66
Dimensions
Feature
Measurement
Length
56 mm
Width
46.6 mm
Height
32 mm
Weight
74 g
Additional Data
FL1 STANDARD
Primary Light (Neutral)
Primary Light (Cool / Neutral / Warm )
Auxiliary Red Light
TURBO
HIGH
MID
LOW
CONSTANT-ON
SLOW FLASHING
Max Output
800 lm
500 lm
280 lm
100 lm
10 lm
10 lm
Max Runtime
2h 30min
3h 30min
6h 30min
14h 30min
21h
42h
Max Beam Distance
168 m
140 m
104 m
63 m
7 m
โ
Peak Beam Intensity
7124 cd
4958 cd
2696 cd
994 cd
12 cd
โ
Note: The stated data is measured by using the NITECORE HLB1500 Rechargeable Li-ion Battery Pack (1,500mAh), in accordance with the international flashlight testing standards ANSI/PLATO FL 1-2019, at an ambient temperature of 26ยฐC (79ยฐF) from the NITECORE Lab. The data may vary in real world use due to different battery usage or environmental conditions.
FL1 STANDARD
Primary Light (Neutral)
Primary Light (Cool / Neutral / Warm)
Auxiliary Red Light
TURBO
HIGH
MID
LOW
CONSTANT-ON
SLOW FLASHING
Max Output
800 lm
500 lm
280 lm
100 lm
10 lm
10 lm
Max Runtime
2h
2h 30min
3h
8h 30min
15h
30h
Max Beam Distance
168 m
140 m
104 m
63 m
7 m
โ
Peak Beam Intensity
7124 cd
4958 cd
2696 cd
994 cd
12 cd
โ
Note: The stated data is measured by using 3 x AAA alkaline batteries, in accordance with the international flashlight testing standards ANSI/PLATO FL 1-2019, at an ambient temperature of 26ยฐC (79ยฐF) from the NITECORE Lab. The data may vary in real world use due to different battery usage or environmental conditions.
Additional Data
HLB1500 Runtime Graph
Performance and Runtime Disclaimer
How to read the data: The outputs provided above are maximum outputs for each mode, and the runtimes provided are the time it takes to drop to 10% of the initial output. This is in line with the International Flashlight Testing Standard ANSI FL1.
Any visual representations (graphs) of the data are approximate only.
Read more
The actual output of the torch/headlamp is controlled by an in-built temperature regulation system. As the torch/headlamp heats up, the brightness will drop to prevent overheating. The Turbo modes of torches/headlamps usually drop down significantly after anything from 15 seconds to 2 minutes. High modes often also experience a drop down over time. Medium and Low modes, however, can be constant for very close to the length of time specified. As the torch/headlamp cools down, either from being turned off or from being used on a lower output level, you will be able to access higher brightness levels again.
Example: An output of 2000 lumens and runtime of 5 hours does not mean 2000 lumens for 5 hours โ it means it starts at 2000 lumens and drops below 200 lumens after 5 hours of continuous use.
Turbo and high modes may be unavailable or limited as the battery gets low on charge.
Exact specifications can vary between torches, batteries, age and environments.
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