This is a Vivitar Auto Thyristor 283 HV Flash.
This unit is designed to work off a High Voltage Battery Pack which DOES NOT come with it.
This flash is in excellent working condition and shows normal signs of wear of use.
WE SHIP IN 1 BUSINESS DAY and package professionally. We will combine orders to save on shipping costs. We are interested in BUYING your photographic equipment as well. We are Camera Exchange in Waterford Michigan.