Product has been fully tested as working. Comes with 90 day warranty.
See below for technician evaluation:
The Vivitar Auto Thryistor 2800 is a simple to use, ideal attachment flash for a 35mm film SLR or just about any other film camera with a hotshoe.
In Very Good Condition with typical marks and scratches from prior use.
Unit has been tested and is in perfect working condition.
Requires 4 x AA batteries (included).
Serial #: 2841338