1. Introduktion
The Sofirn D25L is a versatile and powerful rechargeable headlamp designed for various outdoor activities and everyday use. Featuring dual LH351D LEDs, it delivers up to 1000 lumens of bright, neutral light with a high Color Rendering Index (CRI) of 90, ensuring true color perception and reducing eye fatigue during prolonged use. Its robust construction and user-friendly design make it an essential tool for camping, hiking, fishing, running, and more.

Figure 1: Sofirn D25L Headlamp med justerbart hovedbånd.
2. Nøglefunktioner
- Super skarp belysning: Dual Powerful LH351D LEDs provide a maximum output of 1000 lumens, capable of illuminating large areas.
- Komfortabel Viewing: Neutral beam with 90 high Color Rendering Index (CRI) ensures accurate color representation, suitable for extended use and reading without causing eye strain.
- Udvidet kørselstid: Offers over 6 hours of bright beam on medium 1 mode, ensuring reliable performance for prolonged activities.
- Praktisk genopladning: Easily rechargeable via a 5V charger adapter (not included), PC, or power bank. A full charge takes approximately 4 hours with a 5V 1A charger.
- Holdbar og alsidig: Designed to withstand challenging conditions, having passed 12 types of tests. Ideal for camping, hiking, fishing, running, and other demanding environments.
- Inkluderet tilbehør: Comes with 1 headlamp, 1 battery, 1 headband, and 1 manual.
3. Opsætningsvejledning
3.1. Batteriinstallation og første opladning
- Remove Insulation Paper: Before first use or recharging, unscrew the tail cap of the headlamp and remove the insulation paper from the battery.
- Indsæt batteri: Ensure the Sofirn 18650 Li-ion 3000mAh battery is inserted with the positive (+) end facing towards the head of the lamp.
- Sikker bagkappe: Skru endehætten godt på igen for at sikre korrekt kontakt og vandtæthed.
- Opladning: Overskriftenamp features a built-in USB-C charging port. Unscrew the bezel on the side to reveal the port. Connect the provided USB-C cable to the headlamp and a 5V power source (e.g., wall adapter, PC, power bank). The indicator light will show charging status (e.g., red for charging, green for full).

Figure 2: Built-in USB-C charging port and battery compartment.
3.2. Justering af hovedbøjle
The adjustable headband allows for a comfortable and secure fit. Adjust the straps to fit snugly around your head or over a cap. The headlamp unit can be tilted up to 180 degrees to direct light precisely where needed.

Figur 3: Overskriftamp with 180° angle adjustment and adjustable headband.
4. Betjeningsvejledning
4.1. Basic Operation (White Light)
- Tænd/sluk: Single click the power button to turn the headlamp til eller fra.
- Skift lysstyrketilstande: When the light is on, press and hold the power button to cycle through brightness levels: Moonlight (1 lumen), Low, Medium, and High (up to 500 lumens). Release the button at your desired brightness.
- Turbo tilstand: Double-click the power button from any state to activate Turbo mode (1000 lumens). Double-click again to return to the previous mode.
4.2. Special Modes (Strobe, Beacon, Red Light)
- Strobe/Beacon: Triple-click the power button from any state to activate Strobe mode. Triple-click again to cycle to Beacon mode. Single click to turn off.
- Rødt lys tilstand: From the OFF state, press and hold the power button for approximately 1 second to activate the red light. Press and hold again to cycle through red light brightness levels. Single click to turn off.
4.3. Lantern Mode
Overskriftenamp unit can be easily detached from the headband to function as a standalone mini-lantern or flashlight. This allows for versatile placement on surfaces like picnic tables or inside tents, providing ambient light.
Video 1: Demonstration of Sofirn D25L's high color rendering index and various light modes in a dark environment.
5. Vedligeholdelse
- Rensning: Tør hovedet afamp med en blød, damp klæde. Undgå at bruge skrappe kemikalier eller slibende materialer.
- Batteripleje: For optimal performance and longevity, fully charge the battery before extended storage. If the headlamp will not be used for a long period, it is recommended to remove the battery.
- Vandtæthed: The D25L is waterproof. Ensure all caps and seals are tightly closed before exposing the headlamp to water to maintain its water resistance.
6. Fejlfinding
- Lyset tænder ikke:
- Check if the battery insulation paper has been removed.
- Sørg for, at batteriet er isat korrekt med den positive (+) ende vendt mod hovedet.
- Verify the battery is charged. Connect to a charger and check the indicator light.
- Sørg for, at halehætten er skruet godt på.
- Svagt lys eller kort driftstid:
- Batteriet er muligvis lavt. Genoplad batteriet helt.
- The battery may be old or damaged. Consider replacing the 18650 battery.
- Opladningsproblemer:
- Sørg for, at USB-C-kablet er korrekt tilsluttet til begge hovedtelefoneramp og strømkilden.
- Prøv et andet USB-C-kabel eller strømadapter.
- Kontroller, om opladningsporten er ren og fri for snavs.
7. Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | sofirn |
| Modelnummer | D25L |
| Lyskildetype | LED (Dual LH351D) |
| Hvid lysstyrke | 1000 lumen (maks.) |
| Color Rendering Index (CRI) | 90 High CRI |
| Strømkilde | Battery Powered (18650 Li-ion 3000mAh included) |
| Opladningsport | USB-C (5V) |
| Runtime | 6 hours (on medium 1 mode) |
| Materiale | Aluminium |
| Vandmodstandsniveau | Vandtæt |
| Varens vægt | 5.3 ounce |
| Pakkedimensioner | 4.13 x 3.15 x 1.73 tommer |
8. Garanti og support
The Sofirn D25L Headlamp kommer med en Begrænset 1 års garanti fra købsdatoen. Denne garanti dækker fabrikationsfejl og problemer, der opstår ved normal brug.
For technical support, warranty claims, or any questions regarding your Sofirn D25L Headlamp, please contact Sofirn customer service through their official channels or the retailer where the product was purchased.





