Product has been fully tested as working. Comes with 90 day warranty.
See below for technician evaluation:
The Vivitar 2400M is a simple to use, ideal attachment flash for a 35mm film SLR or just about any other film camera with a hotshoe.
In Excellent Condition with only minor wear and some light marks here and there.
Unit has been tested and is in perfect working condition.
Requires 2 x AA batteries (included).