Vivitar 285HV Zoom Thyristor electronic flash unit for film and digital photography. This professional-grade flash features a vari-power dial for precise manual output control and a zoom head with Tele, Norm, and Wide settings to match your lens focal length. Designed with a tilting head for bounce flash capabilities and a built-in light sensor for automatic exposure modes. The unit includes a standard hot shoe mount with a locking mechanism and a port for an external SB-4 power supply. A reliable choice for photographers seeking powerful, adjustable lighting in a classic form factor.