01. Lightweight Rechargeable Headlamp with Three Light Sources and USB-C Charging Port
– Maximum Beam Distance 145m
– Three Light Sources
– Maximum Brightness 550 Lumens
– Weight 95.50g
* These images are for guidance purposes only, the actual result may vary depending on environmental factors. They are the intellectual property of NITECORE. All rights to take legal action are reserved.

02. Nitecore Advanced lenses
The ideal choice for professional runners
Jiashheng Shen
2019 HK100 2020
champion Ultimate Tsaigu Trail (115km)
Fuzhao Xiang
2020 HK100
2022 7th UTMB UTMB Rongrong Chen Four 2x Chongli 168 Ultra Trail Champion (2018, 2019, 2020 and 2022) 2023 2nd in Amazean Jungle Thailand by UTMB (160km)




 

03. Dazzling output of 550 Lumens!
Perfect for night running, outdoor adventures, camping and many other activities.

04. Concentrating + Diffuse lighting
Ideal for lighting both long and short distances.
– Maximum distance: 145 meters
– Illumination angle: 100 degrees

05. Upgraded Single-Body Optical System
With over 94% light transmittance, it is specially designed to reflect uniform and soft lighting, protecting vision and reducing eye strain.

06. Extremely light design weighing only 95.5 grams! 
* Measurement includes base and strap

07. Durable and sturdy construction
The front casing of NU31 is made of aluminum alloy, providing high heat absorption, suitable for complex outdoor environments.

08. Recharged by USB-C port
The USB-C port does not require a cable to be inserted and charging starts immediately.

09. It has a built-in rechargeable lithium-ion battery (Li-ion) with a capacity of 1800mAh.
The battery is environmentally friendly and available with cyclic charging.
Its power is equal to that of 2.5 AA size batteries or to that of 7 AAA size batteries.
* Comparison is with Panasonic Eneloop batteries 

10. Skin-friendly Elastic Head Strap.
Specially designed with reflective strips to guarantee all-round protection and safety at night.

11. Operating time up to 8 hours starting lighting with strong intensity (High)
– 200 Lumens ———-> 8 hours operating time
– 6 Lumens ————-> 147 hours operating time

12. Triple light source
Features multiple brightness levels and functions
– Central white light
Turbo 500 Lumens, High 200Lumens, Mid 60Lumens, SOS, BEACON
– Auxiliary red light
Steady on, Slow flashing
– Auxiliary white light
Low 50 Lumens, Ultra Low 6 Lumens

15. User-friendly ultralow light level
With an output of 6 lumens, the auxiliary white light with high CRI (CRI≥90) is ideal for temporary lighting at night.
Press the power button twice to access the ultra low light level (ULTRALOW).

16. Auxiliary Red Illumination
Effectively maintains night vision, useful for map reading, emergency response, stargazing,
wildlife observation and night photography.

17. Two-switch operating environment
Long press any button to turn off the flashlight when it is on.
– MODE switch, light source selection.
– POWER switch, Enables / Disables the flashlight and selects the light intensity

18. Power indicators
With a short press of the MODE switch, they show the level of energy left in the battery.
1. One solid blue indicator light indicates approximately 25% battery power
2. Two solid blue indicator lights indicate approximately 50% battery power
3. Three solid blue indicator lights indicate approximately 75% battery power
4. Four blue indicators steady lights indicate approximately 100% battery power

19. Lock Mode
To prevent accidental activation
In Lock Mode, any brightness levels or special functions are not available.
It is an ideal function for storing the flashlight in your backpack or pocket without worrying about it turning on by mistake.

20. Extremely low standby power consumption.
Provides a 365-day standby experience
Highly efficient constant current circuit with no flicker in lighting (Non-PWN)

21. Rated IP66 waterproof
and drop resistant up to 1 meter.

22. Available in three (3) colors
– Slate Gray
– Cool Blue
– Citrus Orange

23. Technical data table
* Note: the data mentioned in the technical data table have been measured using the built-in Li-ion battery (3.7V 1800mAh) in laboratory conditions.
Data may differ in actual use due to different environmental conditions.

24. General features
– Lightweight rechargeable head torch with triple light source and USB-C charging port
– A central LED with a maximum light intensity of up to 550Lumens
– It is equipped with an auxiliary high CRi white LED (CRi>90)
– The red illumination designed to preserve night vision
– Incorporates a single-body optical system with a variety of folds so that it reflects an even and soft illumination.
– It has a built-in 1800mAh Li-ion rechargeable battery
– It incorporates a smart Li-ion battery charging circuit with a USB-C charging port (5V-1A)
– It is designed with two different shape and touch operation switches, offering easy one-handed operation.
– It has five (5) levels of light intensity, three (3) light sources and three (3) special brightnesses
– Its design includes four (4) power indicator lights that indicate the energy left in the battery
– It is made of durable PC materials with the front part made of aluminum alloy
– Light and small in size
– Resistant to drops up to 1 meter high.
– IP66 rated waterproof and dustproof.
* These images are for guidance purposes only, the actual result may vary depending on environmental factors. They are the intellectual property of NITECORE. All rights to take legal action are reserved. 

Maximum Beam Power, Lumens

550

Maximum Beam Distance, M

145

Maximum Beam Intensity, Candles

5800

Maximum Operating Time (Hours / Days)

147 / 6,12

LED Type

High Performance LED

Special Functions

Beacon, SOS, Strobe

Lighting Color

White

Dimensions, Mm

62.3x46x35.6

Weight, G

95.5

Characteristics

Rechargeable

Recommended For

Search, Outdoor activities, Camping

– Package Contents
* NU31 Flashlight
* USB-C Charging Cable
* Head Strap