Introducción
The Sofirn SC21 is a compact and powerful mini flashlight designed for everyday carry (EDC). Featuring a super bright LH351D LED, USB-C rechargeable battery, and a magnetic tail cap, it offers versatile lighting solutions for various situations. This manual provides detailed instructions for safe and effective use of your SC21 flashlight.

Figure 1: Sofirn SC21 Mini Small Flashlight
Información de seguridad
- Do not point the flashlight directly into eyes. The powerful beam can cause temporary vision impairment.
- Mantener fuera del alcance de los niños.
- Do not disassemble the flashlight head or internal components, as this may damage the device and void the warranty.
- Avoid storing the flashlight in direct sunlight or high-temperature environments (e.g., inside a hot car) as this can damage the battery.
- Ensure the USB-C port cover is securely closed to maintain water resistance.
- If the flashlight is not in use for an extended period, unscrew the tube or remove the battery to prevent parasitic drain.
Contenido del paquete
- Sofirn SC21 Mini Flashlight
- 16340 Lithium-Ion Battery (800mAh)
- Cable de carga USB-A a USB-C
- Clip de bolsillo
- Acollador
- Manual de usuario
- Juntas tóricas de repuesto
Video 1: Unboxing the Sofirn SC21 Mini Small Rechargeable Flashlight, showing all included components.
Configuración
1. Instalación de la batería
Before first use, unscrew the tail cap and remove the insulation paper from the battery. Ensure the positive (+) end of the battery faces towards the flashlight head (LED side). Screw the tail cap back on tightly.

Figure 2: Remove insulation paper from the battery before first use.
2. Carga
The SC21 features a built-in USB-C charging port. Open the rubber cover on the side of the flashlight to reveal the port. Connect the provided USB-C cable to the flashlight and a 5V 1A USB power adapter (not included). The indicator LED on the switch will flash RED during charging and turn GREEN when fully charged. Charging typically takes about 1 hour.

Figura 3: Puerto de carga USB-C con luz indicadora.
Instrucciones de funcionamiento
Operación básica
- Encender / apagar: Haga clic una vez en el interruptor lateral para encender o apagar la linterna.
- Change Brightness Levels (Stepped Mode): While ON, press and hold the switch to cycle through Low, Medium, and High. Release the switch at your desired brightness.
- Modo de luz de luna: While OFF, press and hold the switch for 1 second to activate Moonlight mode (1 Lumen).
- Modo Turbo: While ON, double-click the switch to activate Turbo mode (1000 Lumens). Double-click again to return to the previous mode.
- Modo estroboscópico: While ON, triple-click the switch to activate Strobe mode. Triple-click again to return to the previous mode.
- Bloqueo/Desbloqueo: While OFF, four fast clicks of the switch will lock or unlock the flashlight. The light will flash once to confirm lockout/unlock. In lockout mode, pressing the button will only activate Moonlight mode.

Figure 4: The powerful beam of the Sofirn SC21, reaching up to 135 meters.
Indicador de batería
The LED indicator on the switch shows the battery status:
- Verde: Battery is good (above 30%).
- Rojo: Battery is low (less than 30%).
- Parpadeo rojo: Battery is critical and needs immediate charging.
Características especiales
- Tapa trasera magnética: The magnetic tail cap allows you to attach the flashlight to any ferrous metal surface for hands-free lighting.
- Dual-Way Pocket Clip: The reversible clip allows for versatile carrying options, including attaching to a pocket, belt, or hat brim.

Figure 5: Magnetic tail cap for hands-free use.
Video 2: Demonstrating the compact size, dual-way clip, and magnetic tail cap of the Sofirn SC21.
Mantenimiento
- Limpieza: Use a clean, soft cloth to wipe the flashlight body. For stubborn dirt, use a damp tela. No utilice productos químicos agresivos ni abrasivos.
- Lubricación de la junta tórica: Lubrique periódicamente las juntas tóricas con grasa de silicona para mantener la resistencia al agua.
- Cuidado de la batería: Charge the battery regularly, even if not in frequent use, to prolong its lifespan. Avoid fully discharging the battery.
- Limpieza de contactos: Si la linterna tiene una mala conexión, limpie el resorte o los extremos de la batería con alcohol para eliminar cualquier residuo.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La linterna no se enciende. | La batería está muerta o baja. Insulation paper not removed. Tapa de cola suelta. Lockout mode is active. | Cargue la batería. Remove insulation paper. Apriete la tapa trasera. Four fast clicks to unlock. |
| La luz parpadea o se apaga inesperadamente. | Mal contacto de la batería. Batería baja. | Limpie los contactos de la batería. Cargue la batería. |
| No se pueden cambiar los modos de brillo. | Operación incorrecta. | Refer to "Operating Instructions" section for correct button presses. |
Presupuesto
| Característica | Detalle |
|---|---|
| Modelo | SC21 |
| Fuente de luz | LH351D LED (5000K) |
| Salida máxima | 1000 lúmenes |
| Distancia máxima del haz | 135 metros |
| Fuente de poder | 1 batería de iones de litio 16340 (800 mAh incluida) |
| Puerto de carga | USB tipo C |
| Resistencia al agua | IPX8 (hasta 2 metros bajo el agua, no apto para buceo) |
| Resistencia al impacto | 1.5 metros |
| Material | Aleación de aluminio |
| Dimensiones | 3.6" de profundidad x 2.6" de ancho x 1.6" de alto (aprox.) |
| Peso | 2.29 onzas (aprox.) |
Garantía y soporte
Sofirn products come with a warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included in your package or visit the official Sofirn website. If you encounter any issues or have questions, please contact Sofirn customer support for assistance.
Información del contacto:
- Oficial Websitio: www.sofirnlight.com
- Tienda de Amazon: Tienda de Amazon Sofirn





