1. Introduction
Thank you for choosing the LETMY SFL056-COB Rechargeable Flashlight. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.
Package Contents
- LETMY SFL056-COB Rechargeable Flashlight
- USB Charging Cable
- Lanyard (pre-attached or included)
- User Manual
Image 1.1: The LETMY SFL056-COB Rechargeable Flashlight.
2. Safety Information
- Do not look directly into the LED light when operating, as it can cause temporary vision impairment.
- Keep out of reach of children.
- Do not disassemble the flashlight; this may void the warranty and cause damage.
- Use only the provided or a compatible USB-C cable for charging.
- Avoid exposing the flashlight to extreme temperatures or direct sunlight for prolonged periods.
- Although the flashlight is IP65 waterproof, avoid prolonged submersion in water.
3. Setup
Initial Charging
Before first use, fully charge the flashlight. The built-in rechargeable battery requires approximately 2-3 hours for a full charge.
- Locate the USB-C charging port on the flashlight.
- Connect the provided USB-C cable to the flashlight and the other end to a standard USB power adapter (not included) or a computer USB port.
- The LCD digital display will show the charging progress. A full charge is indicated by 100% on the display.
Image 3.1: Connecting the USB-C charging cable to the flashlight.
Image 3.2: The LCD display showing battery percentage during charging.
4. Operating Instructions
The LETMY SFL056-COB features a dual-switch design for easy control of the main and side lights.
Power On/Off and Main Light Modes
Use the primary power button (typically the larger button) to control the main front light.
- Press once: Activates High mode.
- Press again: Switches to Low mode.
- Press a third time: Activates Strobe mode.
- Press a fourth time: Turns the main light off.
- Memory Function: After 10 seconds of use in any mode, pressing the power button will turn the flashlight off. When reactivated, it will return to the last used brightness mode.
Side Light Modes
Use the secondary button (typically the smaller button) to control the multi-functional side light.
- Press once: Activates Side High mode.
- Press again: Switches to Side Low mode.
- Press a third time: Activates Red light mode.
- Press a fourth time: Activates Red-Blue Strobe mode (for emergencies).
- Press a fifth time: Turns the side light off.
Image 4.1: Overview of the 7 available light modes, including main and side lights.
Adjustable Focus (Zoom Function)
The flashlight features an adjustable head to change the beam focus.
- To zoom in (Spotlight): Extend the head of the flashlight forward. This concentrates the beam for long-distance illumination (up to 1526 feet / 465 meters).
- To zoom out (Floodlight): Retract the head of the flashlight backward. This widens the beam for broad area lighting.
Image 4.2: Demonstrating the adjustable focus feature for spotlight and floodlight modes.
Battery Level Display
The integrated LCD digital display shows the real-time battery percentage, allowing you to monitor power levels accurately.
Image 4.3: The LCD display provides an exact battery percentage reading.
5. Maintenance
Cleaning
- Wipe the flashlight body with a soft, damp cloth.
- Do not use abrasive cleaners or solvents.
- Ensure the charging port cover is securely closed to maintain water resistance.
Storage
- Store the flashlight in a cool, dry place away from direct sunlight.
- For long-term storage, charge the battery to approximately 50-70% every 3-6 months to preserve battery life.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Low battery. | Charge the flashlight fully using the provided USB-C cable. |
| Light output is dim. | Low battery. | Recharge the flashlight. |
| Flashlight not charging. | Faulty cable or power adapter. | Try a different USB-C cable or power adapter. Ensure connections are secure. |
| Buttons are unresponsive. | Temporary software glitch. | Allow the battery to fully discharge, then recharge and try again. If the issue persists, contact customer support. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | SFL056-COB |
| Light Source | LED |
| White Brightness | 3600 Lumens (Max Output) |
| Beam Distance | Up to 1526 ft / 465 m |
| Light Modes | 7 (Main: High, Low, Strobe; Side: High, Low, Red, Red-Blue Strobe) |
| Power Source | Rechargeable Lithium Ion Battery |
| Charging Time | 2-3 hours (USB-C) |
| Max Working Time | Up to 16 hours |
| Material | Aircraft-grade Aluminum Alloy |
| Water Resistance | IP65 Waterproof |
| Drop Resistance | 1.5 meters |
| Product Dimensions | 11.75 x 4.25 x 4.25 cm (4.63 x 1.67 x 1.67 inches) |
| Weight | 250 g (0.55 lbs) |
| Included Components | USB Cable |
Image 7.1: The flashlight is designed for durability with IP65 waterproofing and drop resistance.
8. Warranty and Support
LETMY provides a 2-year replacement service for this product. If you encounter any issues, please contact our customer support team. We offer 24-hour online support to assist you with any questions or concerns.
For support, please refer to the contact information provided with your purchase or visit the official LETMY website.
