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Product Information
The SeaLife Sea Dragon Duo 6000F Set (SL691) pairs two Sea Dragon 3000F Auto underwater photo and video light heads on a Flex-Connect Dual Tray for a combined 6000 lumens of output. Each light head delivers 3000 lumens of white light or 180 lumens of red light, runs on a removable 7.4V, 3400 mAh Li-Ion battery, and is depth rated to 330 feet (100 meters).
Who it is for
This set suits underwater photographers and videographers who want brighter, wider coverage from a dual-light rig, including those shooting with GoPro cameras through the included adapter. The two 180-lumen red LEDs on each head let divers navigate in low light without disturbing light-sensitive marine life, and Auto Flash Detect lets the lights pair with an external strobe without washing out a shot.
Key details
Each Sea Dragon 3000F Auto light head uses a BridgeLux Gen 7 Vero COB LED array for white light and two Cree XP-E red LEDs for red light, with a 120° beam angle on land (90° underwater) for white light and 88°/66° for red light. Brightness cycles through 100%, 50%, 25%, Auto white, and Red modes with one-button control, and Auto Bright adjusts output from 300 to 3000 lumens based on subject distance. Color temperature is 5000K with an 80 CRI. The light head body is anodized aluminum with a fiber-reinforced polycarbonate housing, sealed with dual silicone O-rings, and each head weighs 14.4 ounces (408 grams) with the battery installed, with a negative buoyancy of -111 grams underwater. Bulb life is rated at 35,000 hours, and run time is 60 minutes at full power, 120 minutes at half power or Auto, and 240 minutes at quarter power, with a 170 minute recharge time.
Compatibility and sizing
The set includes a GoPro camera adapter for mounting a GoPro to the Flex-Connect Dual Tray, which also accepts additional Flex-Connect arms, trays, or grips.
What's in the box
- Two Sea Dragon 3000F Auto light heads with Li-Ion batteries installed
- Flex-Connect Dual Tray
- Two Flex-Connect Grips
- GoPro camera adapter with acorn nut
- Battery charger with international plug adapters
DiveCatalog.com is an authorized SeaLife dealer and a dive shop in Irvine, California, open since 2003. Call 888-701-4017 or start a chat if you have questions about fit, compatibility, or setting up this light set on your camera rig.
- Combined output: Two light heads producing 3000 lumens each for a total of 6000 lumens, built around a BridgeLux Gen 7 Vero COB LED array.
- Auto Bright mode: Adjusts brightness from 300 to 3000 lumens based on subject distance to help preserve night vision and extend battery life.
- Auto Flash Detect: Each light turns off for about 1 second when it detects an external flash or strobe, and this mode can be toggled on or off in all five light modes.
- One-button control: A single button per light head handles power on/off and brightness selection.
- Five light modes: 100%, 50%, and 25% white, Auto white, and Red, cycling in sequence.
- Dual red LEDs: Two 180-lumen Cree XP-E red LEDs per head for low-light navigation without disturbing marine life.
- Wide beam angle: 120° on land / 90° underwater for white light; 88° on land / 66° underwater for red light.
- Depth rated to 330 feet (100 meters).
- Constant brightness: Regulated circuitry maintains output through the battery's run time.
- Removable battery: 7.4V, 3400 mAh, 25Wh Li-Ion battery per head, with charger and international plug adapters included.
- Flex-Connect expandable: Dual Tray and grips use the Flex-Connect system to add arms, trays, or other accessories.
- Safety features: Protective circuitry cuts power if the light overheats or short-circuits, and a one-way pressure release valve vents the battery compartment in the event of a malfunction.
| Set Model | SL691 |
| Component Light Head Model | SL678 (Sea Dragon 3000F Auto) |
| Body Material (per light head) | Anodized aluminum light head with fiber-reinforced polycarbonate body |
| Light Source (per light head) | 1x BridgeLux Gen 7 Vero COB LED Array (BXRE-50E4001-C-74); 2x Cree XP-E red LEDs |
| White Light Brightness (per light head) | 3000 lumens, maintained throughout run time at full power |
| Red Light Brightness (per light head) | 180 lumens |
| Combined Brightness (set, 2 heads) | 6000 lumens |
| Brightness Control | 100% white, 50% white, 25% white, Auto white, Red, repeat cycle |
| Color Temperature | 5000K |
| Color Rendering Index (CRI) | 80 |
| Beam Angle (White) | 120° on land / 90° underwater |
| Beam Angle (Red) | 88° on land / 66° underwater |
| Battery (per light head) | Lithium Ion 7.4V, 3400 mAh, 25Wh, removable, included |
| Battery Charge Time | 170 minutes |
| Run Time | 60 minutes full power; 120 minutes half power/Auto; 240 minutes quarter power |
| Depth Rating | 330 feet / 100 meters |
| Dimensions, fully assembled (per light head with grip and tray) | 8.5" x 9.5" x 2.3" (22cm x 24cm x 6cm) |
| Dimensions, head only | 5.1" x 2.2" x 4.1" (13cm x 5.6cm x 10.4cm) |
| Weight (per light head with battery) | 14.4 ounces (408 grams) |
| Bulb Life | 35,000 hours |
| O-ring | Dual silicone O-rings with lubricant included |
| Buoyancy (per light head) | Negative; -111 grams underwater |
- Two Sea Dragon 3000F Auto light heads with Li-Ion batteries installed
- Flex-Connect Dual Tray
- Two Flex-Connect Grips
- GoPro camera adapter with acorn nut
- Battery charger with international plug adapters
⚠️ 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
How bright is the Sea Dragon Duo 6000F Set?
Each of the two light heads produces 3000 lumens of white light, for a combined 6000 lumens from the set. Each head also has a red light mode rated at 180 lumens. Auto Bright mode automatically adjusts output from 300 to 3000 lumens based on subject distance.
How long does the battery last on each Sea Dragon 3000F light head?
Run time is 60 minutes at full power, 120 minutes at half power or in Auto mode, and 240 minutes at quarter power. The 7.4V, 3400 mAh, 25Wh Li-Ion battery recharges in 170 minutes using the included charger.
Can the Sea Dragon Duo 6000F Set be used with a GoPro camera?
Yes. The set includes a GoPro camera adapter with acorn nut for mounting a GoPro, and the Flex-Connect tray and grips accept additional Flex-Connect accessories.
What is the depth rating of the Sea Dragon Duo 6000F Set?
Each Sea Dragon 3000F Auto light head in this set is depth rated to 330 feet (100 meters), with dual silicone O-rings and a safety pressure release valve on the battery compartment.
