Cheap underwater flash

Hi All
I own a Canon Ixus 960 IS with the fitting case WP-DC19. I search now for an inexpensive flash which I could use. One I saw is the Ikelite AF35 which might be useable.
It has to survive diving depths of 40 meters, should use rechargeable batteries and, most important, should work as a Slave which gets triggered by the built in flash.
Any recommendations?
Thanks
 
Canon OEM housings while rated to 30-40meters don't do well at that depth. The housing body flexes and the controls sometimes lock up. Other flashes to look for are by Intova, Bonica or Ultramax. Get the ones that have a fiber optic cable that covers the camera's small flash.

Good luck.
 
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I made several dives now with the flash and am mostly happy. It's important that you use it in manual mode and regulate the power by hand. With this I made nice pictures. I use Eneloop batteries, they hold normally two dives, like my camera battery (Canon G16 now).
 
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