The Sofirn SD03 1800 Lumen 447m Throw Rechargeable Diving Flashlight with 18650 Battery is a compact, specialized light designed for underwater use, ideal for scuba diving, snorkeling, and emergency underwater tasks. For example, its 1800-lumen output can illuminate a path up to 447 meters underwater, ensuring reliable visibility. With a side e-switch interface, a robust build, and included external charging, it offers practical functionality. Featuring a 1-year warranty, this Sofirn SD03 for Outdoor Use suits divers and underwater enthusiasts.
Powerful Illumination for Outdoor Use
The Sofirn SD03 features a SFT40 LED with a color temperature of approximately 5000K, delivering a maximum output of 1800 lumens with a beam throw of 447 meters, powered by an included 18650 Li-ion battery (3000mAh). It offers multiple modes, controlled by a side e-switch, with the following lumen outputs and runtimes:
- High: 1800 lumens for approximately 1.5 hours
- Medium: 1000 lumens for approximately 3 hours
- Low: 300 lumens for approximately 4 hours
The flashlight requires an external charger for the included 18650 battery, with charging time varying based on the charger (approximately 1 hour with a 5A/2V charger), and includes a battery indicator on the side switch. It is IP68 waterproof (suitable for depths up to 100 meters) and features a sealed design for underwater reliability, though it may warm up during extended use, requiring careful handling.
Durable and Compact Design
The Sofirn SD03 is constructed from AL6061-T6 aluminum alloy with a matte black anodized finish, offering durability and corrosion resistance for underwater conditions like scuba diving or snorkeling. It measures 126mm in length (4.96 inches) with a head diameter of 34mm (1.34 inches), weighing 102g without the battery (approximately 132g with the included 18650 battery), making it portable for dive gear. The flashlight features a toughened glass lens, a side e-switch, and a lanyard hole for added security, though its length may require secure attachment to avoid loss underwater.
Designed for Outdoor and Diving Use
The Sofirn SD03 1800 Lumen 447m Throw Rechargeable Diving Flashlight with 18650 Battery for Outdoor Use is tailored for divers and underwater enthusiasts needing a reliable light for diving, snorkeling, or emergency underwater tasks. For example, its IP68 rating supports dives up to 100 meters, while the 4-hour low mode ensures extended use for exploration, though the side e-switch UI requires practice to cycle modes (single click to change from low to medium to high), and the lack of onboard charging necessitates carrying an external charger. The robust construction and lanyard hole enhance its reliability, but users should avoid direct eye exposure due to its intensity and rinse it with fresh water after use to maintain performance. The SD03's affordable price, included battery, and waterproof design make it a practical choice for underwater scenarios, offering a balance of power and convenience, though users should plan for charging logistics and switch familiarity.
Key Features and Specs
The Sofirn SD03 1800 Lumen 447m Throw Rechargeable Diving Flashlight with 18650 Battery is built for performance. It features a SFT40 LED (approximately 5000K) with a 1800-lumen output, 447m throw, multiple modes (High, Medium, Low), a 3000mAh 18650 battery (included) with up to 4 hours runtime on low, external charging required (charger included), IP68 waterproofing (suitable for 100m depth), 1m impact-resistant, a side e-switch, a toughened glass lens, and includes a lanyard, 2x O-rings, a single-slot charger, and manual, with a 1-year warranty for reliability. Its dimensions of 126mm x 34mm (head) and weight of 102g (without battery) make it a practical choice for outdoor users. This flashlight excels for illuminating underwater paths or emergencies during diving, snorkeling, or outdoor use, providing reliable, versatile performance for various scenarios.
Specifications Overview
- Type: Rechargeable Diving Flashlight
- Purpose: Scuba Diving, Snorkeling, Emergency Underwater Use
- LED: SFT40 (Approximately 5000K)
- Output: Up to 1800 Lumens
- Beam Throw: 447m
- Modes: High, Medium, Low
- Runtimes:
High: 1800 lumens for approximately 1.5 hours
Medium: 1000 lumens for approximately 3 hours
Low: 300 lumens for approximately 4 hours - Battery: 1x 3000mAh 18650 Li-ion (Included)
- Charging: External Charger (Included, Approximately 1 Hour with 5A/2V)
- Waterproof: IP68 (Suitable for 100m Depth)
- Impact Resistance: 1m
- Dimensions: 126mm (Length) x 34mm (Head Diameter)
- Weight: 102g (Without Battery), Approximately 132g (With Battery)
- Warranty: 1 Year
Package Contents
The package includes:
- Sofirn SD03 Flashlight
- 1x 3000mAh 18650 Li-ion Battery
- Single-Slot Charger
- Lanyard
- 2x O-Rings
- User Manual
Note: Ensure the flashlight is turned off or stored securely after use to prevent accidental activation, which could drain the battery; the side e-switch can be sensitive. Use the included 18650 battery with proper polarity (positive terminal toward the head), and remove the insulating sticker before first use. The IP68 rating supports submersion up to 100m, but clean with fresh water and lubricate O-rings after each dive to maintain waterproofing. Handle with care during high mode to avoid burns due to heat buildup, and do not shine the light directly into eyes due to its intensity. Store in a dry place to maintain reliability, and avoid dropping on sandy surfaces to protect the switch.
