The Vintage Vivitar Auto-thyristor 225 Camera Flash is a classic piece of equipment designed for photographers looking to add a unique touch to their kit. With its retro design and reliable Vivitar brand, this flash unit offers a nostalgic appeal while still providing the functionality needed for capturing high-quality photos. The Auto-thyristor technology ensures consistent and precise flash intensity, making it a versatile option for various photography styles and settings.

This is not tested, I dont have a vivitar camera to test it with.