I'm selling a Subal V3 TTL board for Nikon - see photo.
If your Nikon camera does not have its own internal flash - and you want to use fibre optic strobe initiation, this is the board you need. It can also control electrically-fired strobes as well as fibre optic.
It is compatible with Inon Z240 and Z330 strobes, Sea&Sea YS250, YS-D1 and D2, Ikelite DS161 and 160. I've also used it with the Retra Prime strobe. It can be switched easily underwater from Manual to TTL and vice versa.
The board uses 2x CR2032 batteries which seem to last an eternity. The manual describes the battery capacity as 45,000 flashes! Installation and setup is straight forward. I will include a copy of the manual when shipping and/or can email it to you.
It comes complete with 2x LEDs.
Price is $275/€250/£210 plus shipping (happy to ship anywhere in the world probably via DHL) and any PayPal fees.
PM me for info or to pursue.
Thanks!