I have a non-leaking Nikono SB-101 underwater flash with the SU-101 auto-sensor that I want to sell for $50 plus shipping (insurance required). It was recently pressure tested to 150 feet and did not leak. And it works. If you don't want to use it, get it for your collection of underwater photo equipment of the past. If interested send an email to blueshark438@earthlink.net or call 772-214-2270.