Introduction
Thank you for choosing the BORUIT RJ-2166 Super Bright LED Headlamp. This headlamp is designed for various outdoor activities such as running, camping, hiking, and general use, providing powerful and reliable illumination. Its lightweight design, adjustable features, and durable construction make it an essential tool for your adventures.

The BORUIT RJ-2166 Headlamp, showcasing its bright LED light.
Setup
1. Battery Installation
The BORUIT RJ-2166 headlamp requires 3 x AA batteries (not included). To install the batteries:
- Locate the transparent battery box at the back of the headlamp.
- Open the battery compartment cover.
- Insert 3 AA batteries, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely until it clicks into place.

Illustration of the transparent battery box, showing where to insert 3 AA batteries.
2. Adjusting the Headband
The elastic headband is easily adjustable to ensure a comfortable and secure fit for both adults and children.
- Place the headlamp on your head.
- Adjust the elastic straps on the sides and top to achieve a snug fit without being too tight. The webbing is breathable and sweat-absorbent for comfort during extended use.

Close-up of the highly elastic and breathable webbing of the headlamp's headband.
Operating Instructions
1. Power On/Off and Mode Selection
The headlamp features 3 lighting modes: High light, Low light, and Strobe. To operate:
- Press the power button once to turn on the headlamp in High light mode.
- Press the button again to cycle to Low light mode.
- Press the button a third time to activate Strobe mode.
- Press the button a fourth time to turn off the headlamp.

Visual representation of the three light modes available on the headlamp.
2. Adjusting Beam Angle
The lamp head can be adjusted up to 90 degrees to direct the light precisely where you need it.
- Gently tilt the lamp head up or down to adjust the illumination angle.
- The 90-degree adjustment allows for versatile lighting needs, from close-up tasks to illuminating distant paths.

Diagram illustrating the 90-degree adjustable lamp head for varied lighting needs.
3. Brightness and Beam Focus
Equipped with powerful LED highlighting beads, the headlamp provides a super bright beam that can illuminate over 20 feet ahead. The illuminating area is wide enough for activities like running or working.

Close-up view of the LED highlighting beads, designed for long life and long-range illumination.
Maintenance
1. Cleaning
To maintain optimal performance and longevity of your headlamp:
- Wipe the headlamp body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure the lens is clean for maximum light output.
2. Storage
When not in use for extended periods, store the headlamp in a cool, dry place away from direct sunlight and extreme temperatures.
3. Battery Care
Always remove batteries from the headlamp if it will not be used for a prolonged period to prevent battery leakage and potential damage to the device.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Light not turning on | Dead or incorrectly installed batteries | Check battery polarity; replace with fresh AA batteries. |
| Dim light output | Low battery power | Replace with fresh AA batteries. |
| Water ingress / Malfunction after exposure to water | Improper sealing or exceeding IPX4 rating | Ensure battery compartment is securely closed. Note: IPX4 is water resistant, not for diving. Avoid prolonged submersion. |
| Headlamp feels loose | Headband not adjusted properly | Adjust the elastic straps for a snug fit. |
Specifications
| Feature | Detail |
|---|---|
| Model | RJ-2166 |
| Special Feature | Adjustable |
| Color | Black |
| Power Source | 3 x AA batteries (not included) |
| Light Source Type | LED |
| Material | Plastic |
| White Brightness | 1000 Lumens |
| Item Weight | 5.2 Ounces |
| Water Resistance Level | IPX4 Waterproof |
| Runtime | 5 hours |
| Product Dimensions | 2.2 x 1.18 x 1.38 inches |
Warranty and Support
The BORUIT RJ-2166 Headlamp comes with a manufacturer's warranty. For specific warranty details, claims, or technical assistance, please refer to the product packaging or contact the seller directly. If you need assistance or a replacement unit, simply let us know.

Our support team is ready to assist you with any inquiries.



