Introduction
Thank you for choosing the NICRON B74U Blacklight Torch. This versatile flashlight combines powerful white light with a 395nm UV ultraviolet light, making it ideal for various applications from general illumination to specialized detection tasks. Its unique 90-degree adjustable head, magnetic base, and compact design ensure convenience and adaptability in any situation. Please read this manual carefully to ensure proper use and maintenance of your device.

Image: The NICRON B74U Blacklight Torch, showcasing its L-shaped design, integrated pocket clip, magnetic base, and the included USB charging cable. The image also highlights the white light and UV light capabilities.
Product Features
- Versatile Rotation: Unique 90-degree rotatable head for adjustable light angle.
- Dual Light Source: Features both powerful white LED light (up to 700 lumens) and a 395nm UV ultraviolet light.
- Magnetic Base: Strong magnetic tail allows for hands-free operation by attaching to metal surfaces.
- Pocket Clip: Equipped with a durable clip for easy carrying and attachment.
- Multiple Lighting Modes: 5 white light modes (Low, Medium, High, Strobe, SOS) and a dedicated UV light mode.
- Memory Function: Remembers the last used white light brightness mode.
- Compact and Lightweight: Designed for portability and easy storage.
- Durable Construction: Made from aluminum, water-resistant (IP65 rated), and drop-tested to 1.0m.
- Rechargeable: Includes a rechargeable Lithium Ion battery and charging cable.

Image: Icons illustrating key features: 700 Lumens brightness, 7 hours runtime, 66m beam distance, 1.0m drop testing, IP65 waterproof rating, and 395nm UV LED capability.

Image: Diagram showing the 90-degree rotatable head feature of the NICRON B74U flashlight, highlighting its flexibility for various lighting angles.

Image: The NICRON B74U Blacklight Torch attached to a metal surface under a car hood, demonstrating its strong magnetic base for hands-free illumination during tasks like car repair.
Package Contents
Please check the package for the following items:
- NICRON B74U Blacklight Torch
- Rechargeable Lithium Ion Battery (pre-installed)
- Charging Cable (USB)
Setup and First Use
- Remove Insulating Sheet: Before first use, unscrew the tail cap and remove the clear insulating sheet located between the battery and the contact point. This prevents battery drain during shipping.
- Charge Battery: Ensure the battery is fully charged before initial use. Connect the included charging cable to the flashlight and a USB power source. The indicator light will show charging status.
- Re-attach Tail Cap: After removing the insulating sheet and/or charging, securely screw the tail cap back on.

Image: A diagram illustrating the process of removing the insulating sheet from the battery compartment of the flashlight before initial use.

Image: The NICRON B74U Blacklight Torch next to a laptop, power bank, and car charger, demonstrating various convenient methods for charging the device.
Operating Instructions
The NICRON B74U features a single button for controlling all functions.

Image: A visual guide to the 2-in-1, 6-mode operation of the NICRON B74U, showing how to activate white light modes (High, Med, Low, Strobe, SOS) and switch to the 395nm UV light.
White Light Operation (5 Modes)
- Turn On/Off: Press and hold the button for approximately 1.5 seconds to turn the white light on or off.
- Cycle Brightness Modes: Once the white light is on, short press the button to cycle through Low > Medium > High brightness modes. The flashlight has a memory function and will turn on in the last used brightness mode.
- Strobe/SOS: From any white light mode, press the button 3 times quickly to activate Strobe mode. Press 3 times again to activate SOS mode. Short press once to return to the previous brightness mode.

Image: Visual representation of the three white light brightness levels: High (700 lumens, 1.0h runtime), Middle (250 lumens, 2.5h runtime), and Low (100 lumens, 7h runtime).
UV Light Operation (395nm)
- Activate UV Light: From any state (on or off), long press the button for 2 seconds to turn on the UV light.
- Turn Off UV Light: Long press the button for 2 seconds again to turn off the UV light.
The 395nm UV light is effective for:
- Detecting dry pet stains (urine) on carpets, clothes, and curtains.
- Spotting scorpions.
- Identifying automotive and industrial fluid leaks.
- Verifying currency and passports.

Image: A collage demonstrating various applications of the UV light, including detecting stains in a washroom, on a sheet, on a face mask, and identifying engine oil leaks.
Maintenance
- Cleaning: Wipe the flashlight with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Battery Care: Recharge the battery regularly, even if not in frequent use, to prolong its lifespan. Avoid fully discharging the battery.
- Storage: Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the battery.
- Water Resistance: The flashlight is IP65 water-resistant, meaning it is protected against dust and low-pressure water jets. It is not designed for submersion. Ensure the tail cap is securely tightened to maintain water resistance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. |
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| Light is dim or flickers. |
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| UV light not working. |
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Specifications
| Feature | Detail |
|---|---|
| Model Number | B74UV-1 |
| Light Source Type | LED + UV |
| UV Wavelength | 395nm |
| White Brightness | Up to 700 Lumens |
| Runtime | Up to 7 hours (Low mode) |
| Beam Distance | 66 Millimeters (approx. 2.6 inches) |
| Power Source | Battery Powered (Rechargeable Lithium Ion) |
| Material | Aluminum |
| Product Dimensions | 0.8"D x 0.08"W x 4.41"H (21mm x 2mm x 112mm) |
| Item Weight | 3.84 ounces (0.11 Kilograms) |
| Water Resistance Level | IP65 (Water Resistant) |
| Drop Testing | 1.0m |
| Special Features | Lightweight, Magnetic Base, Rechargeable, Stain Detector, Weatherproof, 90-Degree Adjustable Head |

Image: A diagram illustrating the product dimensions (112mm length, 21mm diameter) and key components like the 90-degree rotatable head, switch, clip, non-slip handle, and high-intensity magnet.

Image: A size comparison of the NICRON B74U Blacklight Torch next to a smartphone, highlighting its compact and portable design.
Warranty and Support
For warranty information and customer support, please refer to the product packaging or contact NICRON customer service directly through their official website or the retailer where the product was purchased. Keep your purchase receipt as proof of purchase.
For more information about NICRON products, visit the official NICRON store: NICRON Store on Amazon.





