Where can you find batteries for a Fujica ST701?

Eveready 675 zinc air hearing aid batteries are the correct voltage and size. Any zinc-air hearing aid battery with the number 675 in the name should work (coded blue) About a buck a piece. It is recommended that you not uncover all of the holes that activate the battery for longer life. The camera's meter doesn't do as much of a power drain as the hearing aids.

http://www.butkus.org/chinon/mercury_replacement_batteries.HTML