Requires 4 x AA Batterries.
Vivitar Auto Thyristor 255 Electronic Flash Unit SEE NOTES works
Vivitar Auto Thyristor 550FD Flash Gun for Minolta, Pentax Cameras Etc WORKING
A Ricoh X-RAY-20so Camera, Vivitar Auto thyristor 550 Fd Flash, with camera case
VIVITAR AUTO THYRISTOR 225 HOT SHOE/PC SYNC UNIVERSAL POCKET FLASH GUN - TESTED
Vivitar Auto Thyristor 550FD Flash Gun for Minolta, Pentax, Olympus Cameras *A1*
