1. Ifihan
This manual provides detailed instructions for the Nitecore NU25 MCT UL 400 Lumen Ultralight USB-C Rechargeable Headlamp. Please read thoroughly before use to ensure proper operation and maintenance.
2. Package Awọn akoonu
The Nitecore NU25 MCT UL package includes:
- Nitecore NU25 MCT UL Headlamp
- USB-C si Okun Ngba agbara USB-C
- Elastic Cord Headband (Black)
- Nkan ti o tan kaakiri
- Nitecore Sticker

3. Eto ati First Lo
3.1. Charging the Headlamp
The NU25 MCT UL features a built-in rechargeable Lithium Ion battery.
- Wa ibudo gbigba agbara USB-C ni ẹgbẹ ori naaamp.
- Open the protective cover of the USB-C port.
- Connect the included USB-C charging cable to the headlamp and a power source (e.g., USB adapter, computer USB port).
- The power indicator lights will show charging status. A full charge typically takes approximately 1 hour.
- Once fully charged, disconnect the cable and securely close the protective cover to maintain water resistance.

3.2. Ṣíṣe àtúnṣe ẹ̀gbẹ́ orí
Ori oriamp comes with an elastic cord headband for comfortable and secure fit.
- Gbe ori oriamp lórí orí rẹ.
- Adjust the elastic cord using the cord lock mechanism at the back to achieve a snug fit without being too tight.
- Ori oriamp unit can be tilted up or down to direct the beam as needed.

4. Awọn ilana Iṣiṣẹ
The NU25 MCT UL features a dual-button interface for intuitive control.

4.1. Power On/Off & Brightness Adjustment (White Light)
- Lati tan: Long press the Power button (larger button) for 2 seconds. The headlamp will turn on in the last used white light mode (or low neutral white by default).
- Lati ṣatunṣe imọlẹ: While the white light is on, short press the Power button to cycle through Ultra Low, Low, Mid, and High brightness levels.
- Lati paa: Gun tẹ bọtini agbara fun awọn aaya 2.
4.2. Changing Color Temperature
Ori oriamp offers multiple color temperatures for the primary white light.
- While the white light is on, short press the Mode button (smaller button) to cycle through Warm White (3000K), Neutral White (4500K), and Cool White (6500K).

4.3. Red Light Ipo
The auxiliary red light is useful for preserving night vision and signaling.
- To turn on red light: Nigba ti headlamp is off, long press the Mode button for 2 seconds. It will turn on in Low Red.
- To adjust red light brightness/mode: While the red light is on, short press the Power button to cycle through Low Red, High Red, and Red Flashing.
- To turn off red light: Long press the Mode button for 2 seconds.

4.4. Special Modes (SOS, Beacon)
- To access special modes: Nigba ti headlamp is off, double press the Mode button. It will activate SOS mode.
- To cycle through special modes: While in SOS mode, short press the Power button to switch to Beacon mode.
- To exit special modes: Long press the Power button or Mode button for 2 seconds.
4.5. Lockout Function
To prevent accidental activation during transport or storage:
- Lati tii: Nigba ti headlamp is off, simultaneously press and hold both the Power and Mode buttons for 2 seconds. The headlamp will flash once to indicate it is locked.
- Lati ṣii: Simultaneously press and hold both the Power and Mode buttons for 2 seconds. The headlamp will flash once and turn on in Ultra Low mode.
5. Key Awọn ẹya ara ẹrọ
- Apẹrẹ Imọlẹ Ultra: Weighing only 1.65 oz (47g) with the elastic cord, designed for maximum comfort during extended use.
- Multiple Color Temperatures (MCT): Offers Warm (3000K), Neutral (4500K), and Cool (6500K) white light options to suit various environments and preferences.
- Imujade Imọlẹ giga: Up to 400 lumens with a maximum beam distance of 144 yards.
- USB-C Gbigba agbara: Integrated USB-C port for convenient and fast charging.
- Ikole ti o tọ: Crafted from robust PC material, rated IP66 for water and dust resistance, and impact-resistant up to 1 meter.
- Imọlẹ Pupa Iranlọwọ: Preserves night vision and provides signaling capabilities.
- Intuitive Dual-Button Interface: Easy operation for power, brightness, and mode selection.
- Atọka Agbara: Built-in indicator displays battery status.


6. Imọ ni pato
| Ipo | Abajade | Akoko ṣiṣe | Ijinna tan ina | Tente Beam kikankikan |
|---|---|---|---|---|
| Primary Light (Neutral White / Warm Light / Cool Light) | ||||
| Ga | 400 Lumens | 2h 40 iṣẹju | 132m | 4381cd |
| Aarin | 200 Lumens | 5h | 94m | 2192cd |
| Kekere | 60 Lumens | 13h | 51m | 662cd |
| Ultra Low | 6 Lumens | 45h | 13m | 43cd |
| Iranlọwọ Red Light | ||||
| Ga | 15 Lumens | 10h | -- | -- |
| Kekere | 7 Lumens | 26h | -- | -- |
| Fifọ lọra | 15 Lumens | -- | -- | -- |
| Awọn ipo pataki | ||||
| SOS | 400 Lumens | -- | -- | -- |
| Beakoni | 400 Lumens | -- | -- | -- |
| Atako Ipa | 1m | |||
| Omi Resistance | IP66 | |||
Note: Stated data is measured using the built-in 700mAh Li-ion battery (3.85V) in accordance with international flashlight testing standards ANSI/PLATO FL 1-2019 at an ambient temperature of 22°C (72°F) from the NITECORE Lab. The data may vary in real-world use due to different environmental conditions.
This product is equipped with a thermal protection function, which automatically regulates the output of the product according to the working condition to maintain optimal performance.

7. Itọju ati Itọju
- Mọ oriamp ara pẹlu rirọ, damp Yẹra fún àwọn ohun èlò ìpalára.
- Rí i dájú pé ideri ibudo USB-C ti wà ní ààbò nígbà tí o kò bá ń gba agbára láti jẹ́ kí omi má baà gbóná.
- Recharge the battery regularly, even if not in use, to prolong battery life. Avoid fully depleting the battery for extended periods.
- Tọju awọn headlamp ni itura, aye gbigbẹ kuro lati orun taara ati awọn iwọn otutu to gaju.
8. Laasigbotitusita
- Oriamp ko tan:
- Check if the battery is charged. Connect to a USB-C power source.
- Ensure the lockout function is not activated (simultaneously press both buttons for 2 seconds to unlock).
- Ijade ina jẹ baibai tabi aisedede:
- The battery might be low; recharge the headlamp.
- Ori oriamp may be in thermal regulation mode if it has been operating at high output for an extended period. Allow it to cool down.
- Gbigbe omi:
- Ensure the USB-C port cover is properly sealed. If water has entered, turn off the device immediately and allow it to dry completely before attempting to use it again. Contact customer support if issues persist.
9. Atilẹyin ọja ati Onibara Support
The Nitecore NU25 MCT UL headlamp comes with a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included in your package or visit the official Nitecore webojula.
For technical support, service, or inquiries, please contact Nitecore customer service or your local distributor.
Manufacturer: Sysmax Innovation Co.





