- 3 Color Temperatures - Warm, Neutral, Cool White
- Brightness up to 400 lumens, runtime up to 45 hours
- 4 brightness levels + 2 rescue modes
- Red light preserves night vision
- Integrated Li-ion USB-C rechargeable battery
- Plug into power bank to recharge
- Lightweight – 1.68 oz (47.5 g)
Nitecore® NU25 MCT UL is an advanced headlamp equipped with Multiple Color Temperature (MCT) settings – warm, neutral, and cool white – to optimize the light for maximum visibility depending on the situation. This innovative headlamp has four brightness levels up to 400 lumens, a runtime of up to 45 hours on Ultralow, a red light to preserve night vision, plus two rescue modes. The standard dual shock cord UL headband is comfortable and highly adjustable to fit your head, hat, or helmet. And recharge by simply plugging into a power bank.
NU25 MCT UL uses an optical matrix system to provide 100˚ wide-angle illumination for outstanding night vision. For reading or close-up work, the light tilts down up to 50˚. There’s also a red light to help preserve night vision that won’t blind your friends. Use during star gazing, map reading, night photography, gear organizing, or doing camp chores. Use Slow Flash for a repeated short red flash to indicate caution.
| Color Temperature | Tone | Best Use |
| 3000K | Warm White | Penetrates through rain, fog, snow, and smoke |
| 4500K | Neutral White | Similar to natural daylight, General activities like walking, reading, emergency lighting |
| 6500K | Cool White | Enhanced contrast and crisp details for night walking |
The headlamp has two buttons – POWER and MODE. Double press POWER for direct access to Neutral White Ultralow. Or long press POWER once for Neutral White Low. Repeatedly press POWER to cycle from Low>Mid>High>Low. Short press MODE to switch color temperature modes. Repeatedly press MODE to cycle from Neutral>Warm>Cool>Neutral. Long press either button to turn off.
For direct access to Red, long press MODE for Low, then repeatedly press POWER to cycle from Low>High>Low. Long press either button to turn off.
You can also access two rescue modes, SOS and Beacon. SOS repeatedly flashes SOS in Morse code (. . . ––– . . .), while Beacon repeatedly flashes a single short flash. Double press MODE to enter SOS mode. Repeatedly press POWER to cycle from SOS>Beacon>Slow Flashing>SOS. Double press MODE again to return to the previous state.
Long press both buttons at the same time for 2 sec to lockout and prevent the light from turning on while in your pocket or pack. The headlamp flashes three times to indicate lockout. Long press both buttons again to reactivate the headlamp and enter Neutral White Ultralow mode.
NU25 MCT UL has a built-in, long-lasting 700 mAh Li-ion rechargeable battery that’s much more sustainable than AAA batteries. An intelligent protective charging circuit and a USB-C connection make it quick and easy to recharge. There’s no need to worry about running out of power or replacing batteries, just plug into a power bank, wall charger, computer, or car (USB-C cable provided). The light maintains full functionality while charging.
To see how much battery power is left, with the light turned off, short press MODE and blue power indicators will light up. One light equals 0-25% left, 2 lights 26-50%, 3 lights 51-75%, and 4 lights 76-100%. Plug it in and the four blue lights will flash. When charging is complete, the four blue lights will become steady on. It takes approximately 1 h 15 min to fully charge the battery. A rubber cover protects the USB-C port from dirt and moisture.
Specifications
| LED | Mode | Output (lumens) | Runtime (hours/min) | Beam Distance ft/yd (m) | Beam Intensity (cd) |
| White | Ultralow | 6 | 45 h | 43/14.2 (13) | 43 |
| Low | 60 | 13 h | 167/56 (51) | 662 | |
| Mid | 200 | 5 h | 308/103 (94) | 2192 | |
| High | 400 | 2 h 40 min | 433/144 (132) | 4351 | |
| SOS | 400 | ||||
| Beacon | 400 | ||||
| Red | Low | 5 | 26 h | 13/4.4 (4) | 5 |
| High | 15 | 10 h | 23/7.7 (7) | 13 | |
| Slow Flash | 15 |
LED: NiteLab MCT UHE LEDs
LED Color Temperatures
3000K, Warm White
4500K, Neutral White
6500K, Cool White
Battery: Built-in rechargeable Li-ion, 700 mAh
Lighting Modes
White: Ultralow/Low/Mid/High/SOS/Beacon
Red: Low/High/Slow Flash
Beam Pattern: 100˚ wide-angle
Body: Polycarbonate, impact resistant
Angle Adjustment: 50˚
Switch: Top Power and Mode buttons, rubber
Charging Connection: USB-C, side, rubber cover (USB-C to USB-C cable provided)
Charging Time: 1 h 15 min (5V/0.5A) approx.
Standby Time: 12 months approx.
Dimensions
Light with Bracket (LxWxH): 2.36 x 1.3 x 1.01 in. (60 x 33 x 25.7 mm)
USB-C Cable Length: 7.9 in. (20 cm)
Diffusing Stuff Sack (LxW): 6 x 4.5 in. (15.25 x 11.4 cm)
Weight
NU25 MCT UL Headlamp with Strap: 1.68 oz (47.5 g) measured, 1.66 oz (47 g) specified
USB-C Cable: 0.22 oz (6.1 g)
Diffusing Stuff Sack: 0.22 oz (6.3 g)
Impact Resistance: 3.3 ft (1 m)
Ingress Protection (IP) Rating: IP66, complete dust protection and high-pressure water jet resistant
Included
1x Rechargeable headlamp
1x USB-C to USB-C charging cable, 7.9 in. (20 cm) long
1x Diffusing stuff sack
User Manual
- Very bright light, to avoid eye injuries, DO NOT stare directly into the light and DO NOT shine the light directly into the eyes of others.
- Keep away from children to avoid injury.
- DO NOT use if battery is damaged to avoid fire or explosion.
- Charge in or on a fire-proof surface to avoid possible injury. DO NOT charge unattended.
- Charge only at temperatures between 32-113°F (0-45°C) to avoid permanent damage and possible fire or explosion during charging.
- Recycle or dispose of properly according to local regulations at end of life, DO NOT dispose in fire or incinerator as battery may catch fire and explode.
In no event shall Litesmith, LLC be liable for any direct, indirect, punitive, incidental, or special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of its products.
