This is a vintage Vivitar 151 electronic flash, purchased in 1971. It comes with a case and a strap, was working when ceased using but has not been tested recently. The flash is designed for mounting and is compatible with various camera models. The brand is Vivitar and the model number is 151. See Photo 3 for specs.  This item is perfect for collectors or photographers looking for vintage equipment. It falls under the categories of flashes, flash accessories, and cameras and photo. Bid with confidence and add this unique piece with its original manual to your collection today. One owner,