1. Киришүү
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. Пакеттин мазмуну
The Nitecore NU25 MCT UL package includes:
- Nitecore NU25 MCT UL Headlamp
- USB-Cден USB-Cге чейин кубаттоочу кабель
- Elastic Cord Headband (Black)
- Диффузиялык заттар капы
- Nitecore Sticker

3. Орнотуу жана биринчи колдонуу
3.1. Башты кубаттооamp
The NU25 MCT UL features a built-in rechargeable Lithium Ion battery.
- Баштын капталындагы USB-C заряддоо портун табыңызamp.
- 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. Баш боосун тууралоо
Башчыamp comes with an elastic cord headband for comfortable and secure fit.
- Башты койamp сенин башыңда.
- Adjust the elastic cord using the cord lock mechanism at the back to achieve a snug fit without being too tight.
- Башчыamp unit can be tilted up or down to direct the beam as needed.

4. Иштөө нускамалары
The NU25 MCT UL features a dual-button interface for intuitive control.

4.1. Power On/Off & Brightness Adjustment (White Light)
- Күйгүзүү үчүн: 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).
- жарыктыгын тууралоо үчүн: While the white light is on, short press the Power button to cycle through Ultra Low, Low, Mid, and High brightness levels.
- Өчүрүү үчүн: Кубат баскычын 2 секунд басып туруңуз.
4.2. Түс температурасын өзгөртүү
Башчыamp 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. Кызыл жарык режими
The auxiliary red light is useful for preserving night vision and signaling.
- To turn on red light: Качан башamp 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: баш болуп жаткандаamp 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:
- Бекитүү: Качан башamp is off, simultaneously press and hold both the Power and Mode buttons for 2 seconds. The headlamp кулпуланганын көрсөтүү үчүн бир жолу күйүп-өчөт.
- Кулпуну ачуу үчүн: 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. Негизги өзгөчөлүктөрү
- Ультра жеңил дизайн: Weighing only 1.65 oz (47g) with the elastic cord, designed for maximum comfort during extended use.
- Көп түстүү температуралар (MCT): Offers Warm (3000K), Neutral (4500K), and Cool (6500K) white light options to suit various environments and preferences.
- Жогорку жарыктык чыгаруу: Up to 400 lumens with a maximum beam distance of 144 yards.
- USB-C кайра заряддалуучу: Integrated USB-C port for convenient and fast charging.
- Туруктуу курулуш: Crafted from robust PC material, rated IP66 for water and dust resistance, and impact-resistant up to 1 meter.
- Көмөкчү кызыл жарык: Preserves night vision and provides signaling capabilities.
- Intuitive Dual-Button Interface: Easy operation for power, brightness, and mode selection.
- Күч көрсөткүчү: Built-in indicator displays battery status.


6. Техникалык шарттар
| Mode | Чыгуу | Runtime | Beam Distance | Peak Beam Intensive |
|---|---|---|---|---|
| Primary Light (Neutral White / Warm Light / Cool Light) | ||||
| Жогорку | 400 Lumens | 2с 40мин | 132 м | 4381cd |
| Орто | 200 Lumens | 5h | 94 м | 2192cd |
| Төмөн | 60 Lumens | 13ч | 51 м | 662cd |
| Ultra Low | 6 Lumens | 45ч | 13 м | 43cd |
| Көмөкчү Кызыл жарык | ||||
| Жогорку | 15 Lumens | 10ч | -- | -- |
| Төмөн | 7 Lumens | 26ч | -- | -- |
| Жай жаркылдоо | 15 Lumens | -- | -- | -- |
| Атайын режимдер | ||||
| SOS | 400 Lumens | -- | -- | -- |
| Маяк | 400 Lumens | -- | -- | -- |
| Таасирге каршылык | 1m | |||
| Суу каршылык | 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. Кароо жана тейлөө
- Башын тазалаamp денеси жумшак, гamp кездеме. Абразивдүү материалдардан алыс болуңуз.
- Суу өткөрбөө үчүн, кубатталбай жатканда USB-C портунун капкагы бекем жабылганын текшериңиз.
- Recharge the battery regularly, even if not in use, to prolong battery life. Avoid fully depleting the battery for extended periods.
- Башты сактаңызamp күн нурунан жана экстремалдык температурадан алыс салкын, кургак жерде.
8. Кыйынчылыктарды
- Headlamp күйгүзбөй:
- 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).
- Жарыктын чыгышы күңүрт же шайкеш келбейт:
- The battery might be low; recharge the headlamp.
- Башчыamp may be in thermal regulation mode if it has been operating at high output for an extended period. Allow it to cool down.
- Суу кириши:
- 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. Кепилдик жана Кардарларды колдоо
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 webсайт.
For technical support, service, or inquiries, please contact Nitecore customer service or your local distributor.
Manufacturer: Sysmax Innovation Co.





