The Vivitar AF400 is a simple 35mm point-and-shoot from the 1990s with a fixed lens, autofocus, and selectable flash modes.
The camera requires two AA batteries (not included). We unfortunately couldn't locate a manual but the camera is very easy to use. The camera's focal length isn't indicated on the camera but appears to be a wide-normal (probably 35mm).
Condition note The camera is in good cosmetic and functional condition. We ran film through the camera and tested all modes (we did not develop the film).