SeaLife Sea Dragon Universal Flash Head

Name: SeaLife Sea Dragon Universal Flash Head
Brand: SeaLife
SKU: SL9631
Price: 349.00 USD
Availability: OutOfStock

SeaLife | SKU: SL9631

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Product Information

The SeaLife Sea Dragon Universal Flash Head (SL9631) is a head-only underwater strobe that attaches to cameras with a built-in flash, delivering usable light down to 200 feet (60 meters) with an effective underwater range up to 8 feet (2.5m) and Auto Learn Mode for pre-flash syncing.

Who it is for

This head-only unit is built for divers who already own the grip, tray, and EVA travel case from the complete SL963 Sea Dragon Universal Flash and need a replacement or spare flash head, or who are assembling a Flex-Connect lighting setup around their own components. It works with SeaLife DC Series cameras as well as Olympus, Canon, Sony, Nikon, and other camera brands that have a built-in flash.

Key details

Guide number: 66 feet (20m) at full power, 5 feet (1.5m) at low power, ISO 100
Power adjustment: 8% to 100% in Auto or Manual mode
Beam angle: 80 degrees horizontal by 60 degrees vertical, 100 by 100 degrees with the included diffuser
Color temperature: 5700K, 5400K with diffuser; CRI of 98 with or without diffuser
Power source: 4 AA batteries, not included; 150 flashes on alkaline, 500 flashes on Eneloop Pro rechargeable
Recycle time: 1 second below half power, 5 seconds at full power
Housing: fiber-reinforced polycarbonate with marine-grade stainless steel hardware and dual NBR o-rings
Weight and size: 18 ounces (509 grams) with batteries; 5 by 4.5 by 2.5 inches (12.7 by 11.4 by 6.4 cm)
Depth rated to 200 feet (60 meters); negative buoyancy of -75 grams in saltwater

Compatibility and sizing

The flash head works with SeaLife DC Series cameras and other camera brands using a built-in flash. It does not work with the SeaLife SportDiver Housing for Smartphones, ReefMaster RM-4K, or SeaLife Micro Series cameras, including Micro HD/HD+, Micro 2.0, and Micro 3.0. The unit is Flex-Connect compatible for expansion with grips, trays, and Flex Arms.

What's in the box

Sea Dragon Universal Flash head with diffuser
Optical cable with universal flash link adapter
Optical cable plug (7mm for Olympus/Sea&Sea housings)
Spare O-rings
O-ring lubricant
O-ring removal tool

DiveCatalog.com is an authorized SeaLife dealer and a dive shop in Irvine, California since 2003; call or chat with us at 888-701-4017 if you have questions about fit or compatibility with your camera or housing.

⚠️ 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

Will the Sea Dragon Universal Flash Head work with my SeaLife Micro camera?

No. The Sea Dragon Universal Flash Head does not work with SeaLife Micro Series cameras, including Micro HD/HD+, Micro 2.0, and Micro 3.0. It also does not work with the SeaLife SportDiver Housing for Smartphones or the ReefMaster RM-4K. It is compatible with SeaLife DC Series cameras and other brands that have a built-in flash.

Does the SL9631 include the grip and tray?

No. The SL9631 is the head-only version of the complete SL963 Sea Dragon Universal Flash, so it excludes the grip, tray, and EVA travel case that come with the full kit. It includes the flash head, diffuser, optical cable, flash link adapter, and o-ring maintenance parts.

What batteries does the Sea Dragon flash head use and how long do they last?

It runs on 4 AA batteries, which are not included. Alkaline batteries deliver about 150 flashes at full brightness, while rechargeable Eneloop Pro batteries deliver about 500 flashes at full brightness, according to the manufacturer's published figures.

How deep can the Sea Dragon Universal Flash Head be used?

It is depth rated to 200 feet (60 meters) and has an effective underwater lighting distance of up to 8 feet (2.5m), making it suitable for adding fill light and color at recreational diving depths.

Review summary

4.3 14 ratings across the web

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Excellent wetsuit but will it crush quickly like other wetsuits?

I purchased a BARE 5mm Reactive wetsuit (open box), which was like new, to replace my 1.5 yr old BARE 5mm Velocity wetsuit which had collapsed to only 2.5mm after 3 diving trips (~100 dives). The Reactive wetsuit is well constructed and very flexible. I had to increase the size of the Reactive suit, as it was smaller than the BARE Velocity suit of the same size. Tremendous customer service by Dive Catalog to exchange the wetsuit for proper size. I hope the Reactive suit does not crush so quickly like my other wetsuits (BARE, Henderson, Pinnacle). Hoping that the new technology in this suit will keep me warm below the thermocline.

Perfectly Built

Best of the many many diver hangers in my life. Easily supports my steel-plated BCD, while still donned with all of my accessories. No cracks, bends, or dents. Has even supported my BCD w/ a steel 100 tank attached (not recommended, for safety purposes, though).

Will continue to use this hanger for the long-term. No brainer.

Go-to Dive Hanger

This is a must-have for every diver. It's the quintessential hanger for all dive gear in one small package.

DiveCatalog's "Quick Dry Multi Accessory Dive Gear Hanger for Boots, Gloves, Hood" is set at a great price for a great product. Versatile enough that I've purchased extra hangers to organize my BMX racing gear.

Must-have for divers and anyone looking to organize their adventurous outdoor activities equipment.

Solid Hanger w/ Tons of Options

Does it's job and then some. The added accessory arms gives you options for a multitude of storage solutions. Solid build, solid pricing, must have for owns of dive gear.

Guide Number	66' (20m) full power / 5' (1.5m) low power at ISO 100
Power Adjustment	8% to 100% (Auto or Manual modes)
Controls	Power (On/Off), Test (Program), Brightness (Manual/Auto)
Beam Angle	80° horizontal x 60° vertical; 100° x 100° with diffuser
Color Temperature	5700K; 5400K with diffuser
Color Rendering Index	98 (with or without diffuser)
Power Source	4 AA batteries (not included)
Battery Life	150 flashes (alkaline); 500 flashes (Eneloop Pro rechargeable)
Recycle Time	1 second (less than half power); 5 seconds (full power)
Buoyancy	Negative; -75 grams in saltwater
Housing Material	Fiber-reinforced polycarbonate
Hardware	Marine-grade stainless steel
O-rings	Dual NBR o-rings with lubricant
Weight	18 ounces (509 grams) with batteries
Dimensions	5" x 4.5" x 2.5" (12.7cm x 11.4cm x 6.4cm)
SKU/Model Number	SL9631