The listing, Sunpak Auto 355AF Thyristor Camera Flash has ended.
Purchased in 2002; was never really very happy with it. It stopped working for me altogether & I have no idea why. (I will admit that I've never really figured out how to use it properly, either.) I used it on a Canon Rebel G film camera. I was told by a pro that the contacts on the flash don't exactly line up with the contacts on the camera and it ruined the camera contacts, making it impossible for me to continue to use a flash on the camera. I don't know if the same thing applies to the flash itself.