Introduction
The Sofirn SP35T is a powerful and versatile Everyday Carry (EDC) flashlight designed for both conventional and professional home and outdoor scenarios. It features a high-performance XHP50B LED, a tactical dual-button interface, and is powered by a rechargeable 21700 Li-Ion battery with convenient USB-C charging. The SP35T offers a dual-mode user interface, providing both tactical and outdoor modes, along with advanced thermal regulation (ATR) for optimal performance and safety.
Safety Instructions
- Always handle the flashlight with care.
- Do not point the flashlight directly into eyes.
- Keep out of reach of children.
- Ensure correct battery polarity during installation to prevent damage (Electronic reverse polarity protection is integrated).
- Do not disassemble the flashlight head as this may damage the LED and void the warranty.
- The flashlight may become hot during prolonged use at high output levels.
Package Contents
- Sofirn SP35T Flashlight
- 1x 21700 Li-Ion Battery (if selected with battery option)
- USB-C Charging Cable
- Lanyard
- Spare O-rings
- User Manual
Specifications
| Feature | Detail |
|---|---|
| Emitter | 1x XHP50B LED (6000-6500K) |
| Max Output | 3800 Lumens |
| Max Throw | 280 meters |
| Battery Options | 1x 21700 Li-Ion battery (Included if selected) |
| Operating Voltage | 3.0V - 4.2V |
| Charging | USB-C Rechargeable |
| Dimensions (Length x Head Diameter) | 139.5 mm x 28 mm |
| Weight (without battery) | 87 grams |
| Body Material | Aerospace grade 6061 aluminum alloy, hard-anodized (military grade type III) |
| Lens | Toughened mineral glass (scratch and wear resistant) |
| Waterproof Rating | IPX8 |
| Switch Mode | High/Middle/Low (General Mode) |
| Support Dimmer | 5 - 8 Files |
| Focal Length | Non-adjustable |
| Zoom | No |
| Functions | Shock Resistant, Self Defense, Hard Light |
| Certification | CCC, GS, LVD, pse, ROHS, ce, CQC, EMC, FCC, SAA, UL, VDE |
Setup
1. Battery Installation
- Unscrew the tail cap of the flashlight.
- Insert the 21700 Li-Ion battery with the positive (+) terminal facing towards the head of the flashlight.
- Ensure any protective paper or film is removed from the battery before insertion.
- Screw the tail cap back on tightly.
2. Charging
- The SP35T features a built-in USB-C charging port.
- Open the rubber cover on the side of the flashlight to reveal the USB-C port.
- Connect the provided USB-C cable to the flashlight and a suitable USB power source (e.g., a phone charger, computer USB port).
- The indicator light on the side switch will show charging status. A full charge for a 5000mAh 21700 battery takes approximately 3 hours.
Operating Instructions
The Sofirn SP35T features a dual-switch interface: a side switch for general modes and a tail switch for tactical operation.
1. Tail Switch Operation (Tactical Mode)
- Half Press: Momentary On. Release to turn off.
- Full Press: Constant On. Press again to turn off.
- Double Press (from OFF): Activates Strobe mode.
2. Side Switch Operation (General Mode)
- Single Press (from ON): Cycles through Eco, Low, Medium, High brightness levels.
- Double Press (from ON): Activates Turbo mode (3800 Lumens).
- Triple Press (from ON): Activates Strobe mode. Subsequent triple presses cycle through SOS and Beacon modes.
- Mode Memory: The flashlight memorizes the last brightness level used in the general modes (except Turbo/Moon).
3. Switching Between General and Tactical Modes
- To switch between General Mode and Tactical Mode, press and hold the side switch for 3 seconds.
- In Tactical Mode, only High and Low brightness levels are available, along with Strobe via the tail switch.
4. Advanced Thermal Regulation (ATR)
The SP35T is equipped with ATR technology. As the flashlight's temperature rises during prolonged high-output use, the ATR system automatically steps down the brightness to prevent overheating. This protects the flashlight and extends its lifespan. The brightness will automatically step up again once the temperature decreases.
5. Battery Indicator
The side switch features a built-in battery charge indicator. The color of the indicator light will change to reflect the remaining battery level.
6. Operational Video Guide
Maintenance
- Clean the threads and O-rings regularly with a clean cloth. Lubricate them periodically with silicone grease to maintain water resistance.
- If the flashlight is not used for an extended period, remove the battery to prevent leakage.
- Store the flashlight in a cool, dry place.
- Avoid dropping the flashlight or subjecting it to strong impacts.
Troubleshooting
1. Flashlight 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.
- The battery might be depleted. Try charging the battery or replacing it with a fully charged one.
- Check for any protective film or paper on the battery that needs to be removed.
2. Light output is dim or flickering:
- The battery might be low. Recharge or replace the battery.
- Clean the battery contacts and flashlight threads.
- Ensure the tail cap and head are screwed on tightly.
3. Flashlight gets hot quickly:
- This is normal behavior for high-output flashlights. The Advanced Thermal Regulation (ATR) system will automatically reduce brightness to prevent overheating.
- If it becomes excessively hot, consider using lower brightness modes.
User Tips
- Upon first use, remember to unscrew the tail cap and remove any protective paper or film from the battery to ensure proper function.
- A standard cell phone charger with a USB-C cable can be used to charge the flashlight.
- The 21700 battery is removable and can be replaced if needed.
Warranty and Support
The Sofirn SP35T Tactical Flashlight comes with a 1-Year Warranty from the date of purchase. For any issues or support inquiries, please contact the seller or Sofirn customer service directly.





