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SeaLife Sea Dragon Digital Underwater Flash Head

B&H # SESDF Mfr # SL963
In Stock
Free Expedited Shipping
You Pay: $399.00
Product Highlights
  • Guide Number: 4.9-65.6'
  • Effective Range: up to 8' Underwater
  • 80° Horizontal x 60° Vertical
  • Diffuser Included
  • Color Temperature: 5700 K
  • Power Adjustment: 8-100%
  • 200' Depth Rating, Negative Buoyancy
  • Fiber-Reinforced Polycarbonate Housing
  • Marine-Grade Stainless Steel Hardware
  • Powered by 4 AA Batteries

The Sea Dragon Digital Underwater Flash Head from SeaLife is a compact light source that restores colors absorbed underwater for richer, more accurate images. It has a depth rating of 200'. Auto mode automatically adjusts flash brightness for optimal image exposure, while 8-100% variable power adjustment lets you manually fine-tune brightness. Auto Learn mode helps you easily sync pre-flash with any digital camera. The Sea Dragon flash features a guide number of 4.9-65.6', an angle of coverage of 80° horizontal x 60° vertical, and an included diffuser to widen the beam to 100°. Additionally, it has a color temperature of 5700K. Its effective underwater range is up to 8'. The unit provides about 150 flashes with 4 AA batteries, which are available separately. Fiber-reinforced polycarbonate construction and marine-grade, stainless steel hardware ensure durability.

Depth Rating
Can be safely submerged to a maximum depth of 200'
Guide Number
About 4.9' at low power and 65.6' at full power
Effective Range
Up to 8' underwater
Variable Power Adjustment
8% to 100% in auto or manual mode. Manual allows you to fine-tune brightness with greater precision and control
80° horizontal x 60° vertical, or 100° with included diffuser
Color Temperature
Approximately 150 flashes with 4 AA batteries, which are available separately
Power on/off, test/program, manual/auto brightness
A convenient quick-release button enables you to detach the flash and hold it in your hand, in order to illuminate hard-to-reach-places more effectively
Fiber-reinforced polycarbonate housing with waterproof battery compartment and marine-grade, stainless steel hardware
Included Accessories
Flex-Connect single tray with standard 1/4"-20 mounting screw and Flex-Connect comfort grip supplied. Additionally, an optical flash cable and universal cable adapter are included. To ensure an always-tight waterproof seal with the dual O-rings, the flash is also supplied with spare O-rings and lubricant, as well as an O-ring removal tool for quick and easy replacement. A large, zippered Sea Dragon Case allows you to store and transport the flash easily
For all SeaLife cameras and various other underwater cameras
Configuration Flash head
Guide No. Low power: 4.9' (1.5 m)
Full power: 65.6' (20 m)
Power Adjustment Range 8-100%
Coverage Angle 80° horizontal x 60° vertical
100° with included diffuser
Depth Rating 200' (61 m)
Exposure Control Auto, manual
Color Temperature 5700 K
Controls Power on/off, test/program, manual/auto brightness
Recycle Time 1.0 sec at less than 1/2 power
5.0 sec at full power
Flashes 150 flashes with 4 AA batteries (sold separately)
Buoyancy Negative
Power 4 AA batteries (sold separately, NiMH recommended)
Construction Housing: fiber-reinforced polycarbonate
Hardware: marine-grade stainless steel
O-rings: nitrile rubber (NBR)
Dimensions 5.0 x 4.5 x 2.5" (12.7 x 11.4 x 6.4 cm)
Weight 1.1 lb (0.5 kg) with batteries
SeaLife Sea Dragon Digital Underwater Flash Head
  • SL9903 Flex-Connect Single Tray with 1/4"-20 Mounting Screw
  • SL9905 Flex-Connect Comfort Grip
  • SL96201 Optical Cable
  • Universal Flash Link Adapter for Sea Dragon Digital Underwater Flash
  • SL98303 Spare O-ring Set
  • SL9807 O-Ring Lubricant
  • SL9808 O-Ring Removal Tool
  • SL942 Large Sea Dragon Case (Black)

    by PowerReviews
    SeaLifeSea Dragon Digital Underwater Flash Head

    (based on 1 review)

    Ratings Distribution

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    • 1 Stars



    Reviewed by 1 customer

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    Great compact Flash.

    By gmartel

    from Montreal, Canada

    About Me Photo Enthusiast

    Verified Reviewer


    • Functional
    • Good Depth Range


    • Cheap Adaptor Pad

    Best Uses

    • Diving

    Comments about SeaLife Sea Dragon Digital Underwater Flash Head:

    The flash is very compact compared to it's previous version. Construction is good and doesn't feel cheap. The adjustment wheels are easy to operate underwater and give a good power for the price.

    The only downside is the adaptor pad to secure the wires for Non-sealife cameras, which is made of a simple Velcro sheet. Is is sometimes difficult to ajust to some models and the Velcro tends to stretch and become loose around the attachement screwing element. Could have been more durable elements.

    Other than that, it made great photos, flash is easy to use and synchronise with Canon Cameras. The pre-fitted difuser is a great addition. The semi-rigid box is good for keeping the equipment protected during travel.

    Tested down to 75ft in medium to bad visibility water.

    • Was this a gift?:
    • No

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    Batteries & Power

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    Required item: Batteries are not included, and are required to power your flash.

    Varta -  High-Energy 1.5 V AA E91 Alkaline Battery - 4 Pk
    • You Pay: $1.23
    Watson -  4-Hour Rapid Charger with 4 AA NiMH Rechargeable Batteries (2300mAh)
    • You Pay: $14.50

    Track and share your location

    Show more >

    Use a buddy beacon to signal your diving partner or a compass for directions.

    Fantasea Line -  Nano Spotter
    • You Pay: $9.95
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