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Product Information
The SeaLife Sea Dragon Duo 9000F Set pairs two Sea Dragon 4500F Auto light heads, each producing 4500 lumens through a 120 degree wide beam (90 degrees underwater) from a COB LED array, giving underwater photographers and videographers a combined 9000 lumens of even, natural-looking light with a 96 (+/-1) CRI and a TLCI of 97.
Who it is for
This set suits underwater photographers and videographers who shoot stills and video on the same dive and want enough even coverage for wide angle dome or fisheye lenses. Because the 4500F lights include Auto Flash Detect mode, which dims the light for one second when it senses an external strobe fire, the set also works well for divers who want to pair continuous video lighting with a strobe for stills, or who want a single rig that handles both.
Key details
Each Sea Dragon 4500F head is built from anodized machined aluminum, is depth tested to 330 feet (100 meters), and runs on a removable Lithium Ion 14.8V, 3400 mAh, 50Wh battery that charges in 2 hours 15 minutes. Run time is 4 hours at 25% brightness (1125 lumens) or 55 minutes at full power. Brightness can be set to 100%, 75%, 50%, 25%, or Auto mode, which automatically ranges from 450 to 4500 lumens based on a built-in photocell sensor. Each head weighs 26 ounces with its battery installed and is negatively buoyant at -310 grams underwater. Bulb life is rated at 35,000 hours, and a hidden SOS signal mode is available for emergencies.
Compatibility and sizing
The light heads use a quick-release button for fast detachment and are built to expand with either the YS mounting system or SeaLife's Flex-Connect mounting system of arms, grips, trays, and adapters, so the set can grow with additional lights or a strobe.
What's in the box
- Two Sea Dragon 4500F light heads
- Two batteries
- Two AC adapters
- Two charging trays
- International plug adapters
- Spare o-rings
- Lubricant tubes
- Removal tools
- Ball joint adapters
- Two Flex-Connect arms
- Two Flex-Connect grips
- Flex-Connect dual tray
- SeaLife Pro Duo Case
DiveCatalog.com is an authorized SeaLife dealer and a dive shop in Irvine, California, serving divers since 2003. Call 888-701-4017 or chat with us if you have questions about fit, compatibility, or expanding your lighting setup.
- Two 4500-lumen light heads using a COB LED array for a combined 9000 lumens of coverage.
- 96 (+/-1) CRI color rendering that closely mimics natural sunlight for accurate color in stills and video.
- TLCI value of 97 for television-quality, true-to-life color consistency.
- Auto Bright mode automatically adjusts brightness from 450 to 4500 lumens to preserve night vision and extend battery life.
- Auto Flash Detect mode dims the light for one second when it senses an external strobe fire.
- Five brightness modes: 100%, 75%, 50%, 25%, and Auto.
- One-button control handles power on/off and brightness mode selection.
- Hidden emergency signal mode with 1-second blink interval and SOS Morse code.
- Quick-release button lets you detach the light head to aim into crevices and hard-to-reach areas.
- 120 degree wide beam angle (90 degrees underwater) illuminates subjects evenly with no hot spots.
- Depth tested to 330 feet (100 meters) in an anodized machined aluminum housing for heat dispersion and durability.
- Removable 50Wh Lithium Ion battery with charger, charging tray, and international plug adapters included per light head.
- Expandable Flex-Connect or YS mounting for arms, grips, trays, and additional lighting or strobes.
| Body Material | Anodized machined aluminum |
| Light Source | 1 x COB LED array (COB - Chip On Board) |
| Brightness | 4500 lumens per light head (maintains 4500 lumens throughout burn time at full power) |
| Brightness Modes | 100%, 75%, 50%, 25%, and Auto (450 to 4500 lumens) |
| Color Rendering Index (CRI) | 96 (+/-1) |
| TLCI | 97 |
| Beam Angle | 120 degrees (90 degrees underwater) |
| Color Temperature | 5600K |
| Battery | Lithium Ion 14.8V, 3400 mAh, 50Wh, removable (per light head) |
| Battery Charge Time | 2 hours 15 minutes |
| Run Time | 4 hours at 25% brightness (1125 lumens); 55 minutes at full power |
| Depth Rating | 330 feet / 100 meters |
| Dimensions | 5.6 inch length x 2.4 inch diameter, head only |
| Weight | 17.7 oz head only without battery; 26 oz with battery (per light head) |
| Buoyancy | Negative; -310 grams underwater (per light head) |
| Bulb Life | 35,000 hours |
| O-ring | Dual NBR o-rings, lube included |
- Two Sea Dragon 4500F light heads
- Two batteries
- Two AC adapters
- Two charging trays
- International plug adapters
- Spare o-rings
- Lubricant tubes
- Removal tools
- Ball joint adapters
- Two Flex-Connect arms
- Two Flex-Connect grips
- Flex-Connect dual tray
- SeaLife Pro Duo 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
Can the Sea Dragon Duo 9000F lights be used with a strobe for stills?
Yes. Each Sea Dragon 4500F light head includes Auto Flash Detect mode, which dims the light for one second when it senses an external strobe firing, so you can pair the continuous lights with a strobe for still photography without washing out the exposure.
How long does the battery last on each Sea Dragon 4500F light?
Each light head's 14.8V, 3400 mAh, 50Wh Lithium Ion battery runs for about 4 hours at 25% brightness (1125 lumens) or about 55 minutes at full power (4500 lumens). A full charge takes 2 hours 15 minutes using the included charger.
What mounting systems work with the Sea Dragon Duo 9000F Set?
The light heads are built to expand with either the YS mounting system or SeaLife's own Flex-Connect mounting system. The set ships with two Flex-Connect arms, two Flex-Connect grips, and a Flex-Connect dual tray, so you can mount the lights side by side or add further arms, grips, or a strobe as your rig grows.
What comes in the box with the Sea Dragon Duo 9000F Set?
The set includes two Sea Dragon 4500F light heads, two batteries, two AC adapters, two charging trays, international plug adapters, spare o-rings, lubricant, removal tools, ball joint adapters, two Flex-Connect arms, two Flex-Connect grips, a Flex-Connect dual tray, and a SeaLife Pro Duo Case.
