The SOFIRN SD11 is a professional-grade scuba diving flashlight engineered for underwater exploration and photography. With a maximum output of 5000 lumens and a wide 116° beam angle, it delivers powerful, even illumination across expansive underwater areas, minimizing blind spots during navigation and situational assessment in low-visibility conditions. The flashlight features dual-CCT white light technology with six high-performance LEDs—three warm 3000K and three cool 6000K—allowing seamless switching between warm light for cutting through murky water and cool light for daylight-like clarity. Activating both modes simultaneously produces a balanced 5000K color temperature at full brightness, making it ideal for underwater photography and cave diving. An instant-on 660nm red light with 150 lumens preserves night vision and avoids startling marine life, with four adjustable brightness levels accessible via the Hall-effect switch for close-range tasks and low-profile navigation. The omni-control hub combines a Hall-effect switch and touch button for intuitive operation—switch light types and adjust brightness effortlessly, even with wet hands or gloves. The built-in removable 26800 7500mAh battery with Type-C charging delivers up to 11 hours of runtime at low brightness settings, ensuring reliability for extended dives and everyday use. IPX8 waterproof rated for professional diving applications.
Specifications:
1. 5000 Lumens-Max Output
With a max output of 5000 lumens and a wide 116° beam angle, the SOFIRN SD11 delivers powerful, even illumination underwater. It can light up a wider underwater area with fewer blind spots, ideal for scanning, navigation, and situational awareness in low visibility
2. 2-CCT White Light
Equipped with 6 high-performance LEDs (3*TN3535 3000K CRI90 and 3*TN3535 6000K) the SD11 can switch between warm and cool white light with ease. Warm light cuts through murky water for better contrast, while cool light offers bright, daylight-like clarity. When both modes are activated simultaneously, the color temperature approaches 5000K, and the brightness reaches 5000 lumens. Perfect for underwater photography, cave diving, or simply matching light color to water conditions.
3. Instant Red Light
The 150-lumen instant-on 660nm red light preserves night vision and won't startle marine life. With a quick flick of the Hall-effect switch, you can access four brightness levels—ideal for close-range tasks, night navigation, or situations where you need to stay low-profile without sacrificing visibility.
4. Omni-Control Hub
SD11 comes with a Hall-Effect switch and touch button; all modes can be switched via the central control button. Control everything quickly and intuitively, switch light types and adjust brightness without fumbling, even with wet hands or gloves.
5. Long Runtime
The SD11 features a built-in removable 26800 7500mAh battery and a Type-C interface. It can achieve a long battery life of 11 hours while maintaining 300lm (low brightness setting). Whether you're diving deep or using it around the house, this light is ready when you are.
