1. Introduction
Thank you for purchasing the Sofirn SC33 Tactical Flashlight. This compact and powerful EDC (Everyday Carry) light is designed for various applications, including outdoor adventures, emergencies, and daily use. It features a high-output LED, USB-C rechargeable battery, and multiple lighting modes, all housed in a durable, waterproof aluminum body.
2. Safety Information
- Do not shine the flashlight directly into eyes. The high lumen output can cause temporary vision impairment.
- Keep out of reach of children.
- Ensure the battery is inserted with the correct polarity.
- Do not disassemble the flashlight head or tail cap unless instructed for maintenance.
- Avoid exposing the flashlight to extreme temperatures or direct sunlight for prolonged periods.
- Use only recommended batteries and charging cables.
3. Package Contents
The Sofirn SC33 package includes the following items:
- Sofirn SC33 Flashlight x1
- Nylon Holster x1
- Rechargeable 21700 Battery (5000mAh) x1
- USB-C Charging Cable x1
- User Manual x1
- Spare O-rings x2
- Wristband x1

Image: Sofirn SC33 Flashlight and included accessories.
4. Setup
4.1 Battery Installation
Before first use, ensure the insulating paper disc is removed from the battery. Unscrew the tail cap, remove the orange insulating paper, and then reinsert the battery with the positive (+) end facing towards the flashlight head. Screw the tail cap back on securely.

Image: Removing the insulating paper from the battery.
4.2 Charging
The SC33 features a built-in USB-C charging port for convenient recharging. Simply connect the provided USB-C cable to the flashlight's port and a compatible USB power source. The indicator light on the flashlight will show charging status:
- Green: 75%-100% battery
- Flashing Green: 50%-75% battery
- Red: 25%-50% battery
- Flashing Red: <25% battery
The flashlight can be charged using any standard USB-C phone cable, eliminating the need for special chargers.

Image: USB-C charging port and battery indicator.
4.3 Holster and Pocket Clip
The SC33 comes with a durable nylon holster and a two-way bolted pocket clip for versatile carrying options. The holster allows for secure attachment to belts or backpacks, while the pocket clip provides easy everyday carry.

Image: Flashlight in holster for hands-free carrying.

Image: Flashlight with durable metal pocket clip.
5. Operating Instructions
The Sofirn SC33 features a tail e-switch for intuitive control of its various modes.

Image: Main Switch Operation Guide.
5.1 Basic Operation
- 1 Click: Turn the flashlight On or Off.
- Long Press (from On): Cycle through general lighting modes (Moonlight, Eco, Low, Medium, High).
- Long Press (from Off): Activate Moonlight Mode.
- Double Click (from On or Off): Activate Turbo Mode.
5.2 Special Modes
- Triple Click (from On or Off): Cycle through special modes: Strobe, SOS, and Beacon.
5.3 Stepless Ramping Mode
- Quadruple Click (from On): Enter Stepless Dimming Mode. Hold the switch to smoothly adjust brightness up or down. Release and press again to change ramping direction.
5.4 Lock Mode
The lock mode prevents accidental activation and extends the lifespan of your flashlight.
- Quadruple Click (from Off): Activate Lock Mode.
- Unlock: When the light is locked, double-click the switch.
- Disable Auto-Lockout: When the light is locked, quadruple-click the switch.

Image: Auto-Lockout Settings.
5.5 High-Performance Boost Driver
The SC33 incorporates a boost driver that regulates power from the battery and boosts voltage to the LED. This ensures the LED operates at its optimal current and brightness level, providing consistent illumination regardless of battery charge. Unlike many budget flashlights that dim as the battery drains, the SC33 maintains a steady brightness output.

Image: High-Performance Boost Driver ensures consistent brightness.
6. Specifications
| Feature | Value |
|---|---|
| Special Feature | Water Resistant |
| Color | Black |
| Power Source | Battery Powered |
| Light Source Type | LED |
| Material | Aluminum |
| White Brightness | 5200 Lumens |
| Voltage | 5 Volts |
| Battery Type | Lithium Polymer (21700) |
| Number of Batteries | 1 (included) |
| Water Resistance Level | IPX8 Waterproof |
| Runtime (Moonlight Mode) | 300 hours |
| Item Dimensions (L x W x H) | 1.22"L x 1.22"W x 3.15"H (approx. 131mm long, 32mm head diameter) |
| Mounting Type | Handheld |
| Model Number | Sofirn SC33 |

Image: ANSI/NEMA FL1 Chart for Sofirn SC33.

Image: Sofirn SC33 Flashlight.

Image: IPX8 Waterproof and Rugged Aluminum Body.
7. Maintenance
- Cleaning: Wipe the flashlight with a soft, damp cloth. Do not use harsh chemicals or abrasive materials.
- O-rings: Periodically inspect the O-rings for wear and tear. Replace them with the provided spare O-rings to maintain the IPX8 waterproof rating. Apply silicone grease to the O-rings to ensure a good seal.
- Threads: Keep the threads of the tail cap clean and lightly lubricated to ensure smooth operation and proper electrical contact.
- Battery Care: Store the battery in a cool, dry place when not in use. If storing for extended periods, charge the battery to approximately 50% capacity.
8. Troubleshooting
- Flashlight not turning on: Ensure the battery is fully charged and inserted correctly. Check for any insulating paper still present.
- Intermittent operation: Clean the battery contacts and flashlight threads. Ensure the tail cap is screwed on tightly.
- Charging issues: Try a different USB-C cable or power adapter. Ensure the charging port is clean and free of debris.
- Reduced brightness or runtime: The battery may need to be recharged or replaced if it's old.
9. Warranty and Support
The Sofirn SC33 Tactical Flashlight comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use. For warranty claims or technical support, please contact Sofirn customer service through the retailer where the product was purchased or visit the official Sofirn website.
10. Official Product Video
Video: Sofirn SC33 Tactical Flashlight with Holster - An overview of the flashlight's features and accessories.





