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Product Information
The SeaLife Sea Dragon Duo 3000F Flash Set is a two-head underwater strobe kit for divers and underwater photographers who want more light and coverage than a single strobe provides. It pairs two Sea Dragon flash heads with diffusers on a Flex-Connect Dual Tray with two Flex-Connect Grips, and it is depth rated to 200 feet/60 meters.
Who it is for
This set is built for underwater photographers who already shoot with a camera that has a built-in flash and a standard tripod mount, including SeaLife cameras, Olympus, Canon, Sony, and Nikon models. It is meant for anyone who wants to add a second strobe to spread light more evenly across a subject and reduce shadows and backscatter, and who may want to expand later with Flex-Connect flex arms and other accessories.
Key details
- Guide number of 66 feet (20 m) at full power, 5 feet (1.5 m) at low power, ISO 100
- Power adjustment range from 8% to 100%, usable in Auto or Manual mode
- Coverage of 80° horizontal x 60° vertical, expanding to 100° x 100° with the included diffuser
- Color temperature of 5700K, or 5400K with the diffuser; color rendering index of 98
- Battery life of approximately 150 flashes on alkaline AA, 250 on lithium AA, or 500 on rechargeable Eneloop Ni-MH batteries (batteries not included)
- Recycle time of 1 second at under half power and 5 seconds at full power
- Negative buoyancy of -75 grams underwater per flash head
- Fiber-reinforced polycarbonate housing, marine-grade stainless steel hardware, and dual NBR o-rings with lube included
- Each flash head weighs 18 ounces (509 grams) with batteries and measures 5" x 4.5" x 2.5" (12.7 x 11.4 x 6.4 cm)
- Effective underwater flash range up to 8 feet (2.5 meters)
Compatibility and sizing
The Duo Flash Set works with SeaLife DC cameras and with Olympus, Canon, Sony, Nikon, and other brands that have a built-in flash and a standard tripod mount, and it connects into the Flex-Connect system of trays, grips, and flex arms. It does not work with SeaLife SportDiver smartphone housings, the ReefMaster RM-4K, or SeaLife Micro Series cameras.
What's in the box
- Two Sea Dragon flash heads with diffusers
- Flex-Connect Dual Tray
- Two Flex-Connect Grips
- Optical cable with adapters
- Two cable plugs (Olympus/Sea & Sea compatible)
- Spare o-rings with tool
- Instruction manual
- Deluxe travel case
DiveCatalog.com is an authorized SeaLife dealer and a dive shop in Irvine, California, serving divers since 2003. Call or chat with us at 888-701-4017 if you have questions about fit or camera compatibility before you order.
- Universal fit: Works with SeaLife DC cameras and with Olympus, Canon, Sony, Nikon, and other brands of underwater cameras that have a built-in flash and standard tripod mount.
- Dual strobe coverage: Two Sea Dragon flash heads on a Flex-Connect Dual Tray with two Flex-Connect Grips spread light for more even illumination than a single strobe.
- Auto Mode: Automatically adjusts flash brightness for optimal image exposure.
- Variable power adjustment: Manual power control from 8% to 100% for fine-tuning brightness and exposure.
- Quick-release heads: Detach flash heads for aiming in hard to reach areas.
- Flex-Connect expandable system: Add Flex-Connect trays, grips, and flex arms to reconfigure the rig.
- Auto Learn Mode: Syncs pre-flash timing with digital cameras automatically.
- Depth rated to 200 feet/60 meters.
- Rugged build: Fiber-reinforced polycarbonate housing, marine-grade stainless steel hardware, and dual NBR o-rings with lube included.
- Waterproof battery compartment on each flash head, which runs on 4 AA batteries (not included).
| Guide Number | 66' (20m) full power / 5' (1.5m) low power, at ISO 100 |
| Power Adjustment Range | 8% to 100% (Auto or Manual mode) |
| Controls | Power (On/Off), Test (Program), Brightness (Manual/Auto) |
| Coverage/Beam Angle | 80° horizontal x 60° vertical (100° x 100° with diffuser) |
| Color Temperature | 5700K (5400K with diffuser) |
| Color Rendering Index | 98 |
| Power Source | 4 AA batteries per flash head (not included) |
| Battery Life | ~150 flashes (alkaline), 250 flashes (lithium), 500 flashes (rechargeable Eneloop) |
| Recycle Time | 1 second at under 1/2 power, 5 seconds at full power |
| Buoyancy | Negative, -75 grams underwater per flash head |
| Housing Material | Fiber-reinforced polycarbonate |
| Hardware | Marine-grade stainless steel |
| O-ring Material | Dual NBR o-rings (lube included) |
| Weight | 18 oz (509 g) per head, with batteries |
| Dimensions | 5" x 4.5" x 2.5" (12.7 x 11.4 x 6.4 cm) per head |
| Depth Rating | 200 feet/60 meters |
| Effective Range | Up to 8 feet (2.5 meters) underwater |
- Two Sea Dragon flash heads with diffusers
- Flex-Connect Dual Tray
- Two Flex-Connect Grips
- Optical cable with adapters
- Two cable plugs (Olympus/Sea & Sea compatible)
- Spare o-rings with tool
- Instruction manual
- Deluxe travel case
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Does the Sea Dragon Duo Flash Set work with any underwater camera?
It works with SeaLife DC cameras and with Olympus, Canon, Sony, Nikon, and other brands that have a built-in flash and a standard tripod mount. It does not work with SeaLife SportDiver smartphone housings, the ReefMaster RM-4K, or SeaLife Micro Series cameras.
What batteries does the Sea Dragon Duo Flash Set use?
Each flash head takes 4 AA batteries, which are not included. Battery life is approximately 150 flashes on alkaline AA batteries, 250 flashes on lithium AA batteries, or 500 flashes on rechargeable Eneloop Ni-MH batteries.
How deep can the Sea Dragon Duo Flash Set be used?
Each Sea Dragon flash head in the Duo set is depth rated to 200 feet/60 meters, with fiber-reinforced polycarbonate housings, marine-grade stainless steel hardware, and dual NBR o-rings sealing the unit.
What is included with the Sea Dragon Duo Flash Set?
The set includes two Sea Dragon flash heads with diffusers, a Flex-Connect Dual Tray, two Flex-Connect Grips, an optical cable with adapters, two cable plugs for Olympus/Sea & Sea compatibility, spare o-rings with a tool, an instruction manual, and a deluxe travel case.
