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IPX8 100m Waterproof | 3000 Lumens | SFT40-42R LED | 21700 Battery (4800mAh) | 6-10 Hour Runtime | Magnetic Rotating Switch | Heat Sink
The Helius DL-289 is a professional IPX8 diving flashlight engineered for deep underwater exploration, marine inspection, and night diving. With an impressive 100m depth rating and a durable aluminum alloy body, it is built to withstand the extreme pressures of deep water while delivering reliable illumination.
Equipped with a high-performance SFT40-42R LED, the DL-289 delivers 3000 lumens of bright, penetrating light. Whether you are navigating a wreck, checking reef structures, or working in murky conditions, the focused beam cuts through the dark water for clear visibility. Multiple modes include High, Medium, Low, and SOS.


The DL-289 features a magnetic rotating switch that is easy to operate even while wearing diving gloves. Simply rotate the ring to cycle through modes. A built-in heat sink ensures effective heat dissipation during extended use, while the bold waterproof rubber ring provides an extra layer of security against water ingress.
Powered by a single 21700 battery (4800mAh), the DL-289 offers an impressive runtime of 6 to 10 hours. It is available in two versions: standard 21700 and rechargeable 21700, giving you the flexibility to choose the configuration that best fits your needs.
IPX8 Waterproof & 100m Depth Rating: Designed for extreme deep diving, tested to withstand high water pressure.
3000 Lumens High Brightness: SFT40-42R LED delivers powerful illumination for underwater visibility.
Magnetic Rotating Switch: Glove-friendly operation with 4 modes (High/Medium/Low/SOS).
21700 Rechargeable Battery: Large-capacity battery delivers stable power and extended runtime from 6 to 10 hours.
Two Battery Versions: Available with standard 21700 or rechargeable 21700 configuration.
Heat Sink Design: Prevents overheating during extended use underwater.
Bold Waterproof Rubber Ring: Enhanced sealing for maximum water resistance.
Durable Aluminum Alloy Body: Strong construction improves impact resistance, corrosion resistance, and long-term durability.



Scuba diving
Underwater inspection
Marine maintenance
Fishing and boating
Emergency rescue
Night patrol and search tasks
1 x Helius DL-289 Diving Flashlight
1 x Carry Bag
1 x Lanyard
1 x Spare Waterproof O-ring
1 x Lubricant

We offer flexible OEM and ODM services for diving equipment brands and outdoor retailers. Customize the Helius DL-289 with your logo, packaging design, and specific performance requirements. Our engineering team supports custom LED configurations, battery capacities, and switch designs. Flexible MOQ for OEM partners. We also support wholesale orders for distributors and dive shops worldwide.
The Helius DL-289 combines 3000 lumens SFT40-42R performance, a magnetic rotating switch, and an impressive 100m depth rating in a durable aluminum alloy body. Its 6-10 hour runtime, heat sink, and two battery versions make it a practical choice for distributors, wholesalers, diving equipment suppliers, and outdoor product buyers. Backed by 15 years of manufacturing experience and 100% underwater pressure testing, Helius is committed to delivering reliable, high-performance lighting tools for real explorers. Helius DL-289 is available for retail and wholesale. We proudly support diving equipment distributors and outdoor retailers worldwide. Contact us for bulk pricing. Looking for more options? Visit our Wholesale Flashlights page for bulk order details and OEM options.
Whether you are a diving enthusiast looking for reliable gear or a distributor seeking a long-term manufacturing partner, we are here to help.
Contact Us for Wholesale & OEM Pricing