1. Introduction
The Sofirn H25S is a versatile and portable LED headlamp designed for a wide range of indoor and outdoor activities. Featuring dual Luminus SST40 LEDs, it delivers powerful illumination with a maximum output of 1200 lumens and a beam distance of up to 200 meters. Its integrated Micro USB charging interface and included 18650 battery ensure convenient power management. The H25S is built with a durable aircraft-grade aluminum alloy case and an adjustable elastic headband, making it suitable for camping, hiking, hunting, fishing, searching, and cycling.
2. Package Contents
Please check the package for the following items:
- 1 x Sofirn H25S Headlamp
- 1 x USB Charging Cable
- 1 x 18650 Rechargeable Battery (2200mAh)
- 1 x Elastic Headband
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | H25S |
| Light Source | 2* Luminus SST40 LED 6500K |
| Max Output | 1200 Lumens |
| Max Beam Distance | 200 meters (approx. 220 yards) |
| Wattage | 10W |
| Beam Angle | 180° |
| Power Supply | 1 x 18650 Lithium Ion Battery (Included) |
| Charging Interface | Micro USB |
| Charging Time | 7-8 hours |
| Waterproof Rate | IPX4 |
| Material | Aircraft-grade Aluminum Alloy (Headlamp), Elasticity Head Band |
| Lifespan | 100,000 hours |
| Certification | CCC, ROHS, CE, FCC |
| Purpose | Diving, Caving, Camping, Searching, Fishing, Cycling |
4. Setup
4.1 Battery Installation
The Sofirn H25S comes with a pre-installed 18650 battery. If you need to replace the battery:
- Unscrew the tail cap of the headlamp.
- Insert a fully charged 18650 Lithium Ion battery with the positive (+) terminal facing towards the head of the lamp.
- Screw the tail cap back on tightly to ensure proper contact and water resistance.
4.2 Headband Adjustment
The elastic headband is adjustable to fit comfortably and securely on your head or helmet.
- Thread the headlamp unit through the plastic bracket on the headband.
- Adjust the nylon straps to achieve a snug and comfortable fit.
5. Charging
The Sofirn H25S features a built-in Micro USB charging port for convenient recharging of the 18650 battery.
- Locate the Micro USB port on the headlamp unit.
- Connect the provided USB charging cable to the headlamp and to a USB power source (e.g., wall adapter, computer, power bank, car charger).
- The indicator light will show Red during charging and turn Green when fully charged.
- A full charge typically takes 7-8 hours.
6. Operation
6.1 Basic UI (User Interface)
The H25S uses a simple user interface:
- Turn On/Off: Click the switch once.
- Change Brightness Levels: While the headlamp is on, press and hold the switch to cycle through brightness levels.
6.2 Working Modes
The headlamp features 6 working modes with a memory function:
- Low Light: Click the switch once (from off).
- High Light: Click the switch a second time (from off, or from Low).
- Infinite Dimming: Long press the switch while the light is on to smoothly adjust brightness.
- Strobe: Double click the switch quickly (from any state).
- SOS: Double click the switch a second time quickly (from Strobe mode).
- Beacon: Double click the switch a third time quickly (from SOS mode).
The memory function ensures the headlamp turns on in the last used brightness mode (excluding Strobe, SOS, and Beacon).
6.3 Headlamp Rotation
The headlamp unit can be swiveled up and down by 90 degrees to direct the light where needed.
7. Maintenance
7.1 Cleaning
- Wipe the headlamp with a clean, soft cloth.
- Avoid using harsh chemicals or abrasive materials that could damage the finish or lens.
- If the headlamp gets dirty with mud or dirt, clean it gently with water and a soft brush, then dry thoroughly.
7.2 Battery Care
- Always use high-quality 18650 Lithium Ion batteries.
- Store the battery in a cool, dry place when not in use.
- Recharge the battery regularly, even if not fully depleted, to prolong its lifespan.
- If the headlamp will not be used for an extended period, remove the battery to prevent potential leakage.
7.3 Water Resistance
The H25S is rated IPX4 waterproof, meaning it is protected against splashing water from any direction. While it can withstand rain and splashes, it is not designed for prolonged submersion. Ensure all caps and covers are securely fastened to maintain water resistance.
8. Troubleshooting
- Headlamp does not turn on:
- Check if the battery is inserted correctly with the positive (+) terminal facing the head.
- Ensure the tail cap is screwed on tightly.
- Verify the battery is charged. If not, connect it to a power source using the USB cable.
- Try a different, fully charged 18650 battery.
- Light output is dim or flickers:
- The battery might be low. Recharge the battery.
- Ensure the battery contacts are clean. Clean them with a cotton swab if necessary.
- Headlamp gets hot during use:
- High brightness modes generate more heat. This is normal. The headlamp has a cooling program to extend its lifetime.
- If it becomes excessively hot, reduce the brightness level.
9. User Tips
- Brightness Comparison: Users have noted that the Sofirn H25S offers excellent brightness, often perceived as brighter than similar models from other brands.
- Lens Cover Material: While the headlamp body is aluminum alloy, some similar models may use plastic for the lens cover. Exercise care to avoid dropping the headlamp or exposing the lens cover to aggressive liquids, as plastic can be more prone to cracking.
- Versatile Use: The detachable design allows the headlamp to be used not only on the head but also clipped onto a cap or held in hand for various tasks.
10. Warranty & Support
Sofirn products are manufactured to high-quality standards. For warranty claims or technical support, please refer to the seller's specific warranty policy or contact their customer service directly. Keep your purchase receipt as proof of purchase.
