Plugged in and tested to the best of my abilities.It seems to work as it should.

The Keystone Movie 8 mm Projector Dual 539 Vintage is a classic piece of technology designed to project movies in the 8mm film format. With its dual lens system, this projector allows for high-quality visuals and sharp images. The Keystone brand is known for its durability and reliability, making this product a valuable addition to any vintage movie collection. Perfect for film enthusiasts looking to enjoy their favorite movies in the authentic 8mm format, this projector is a nostalgic piece that brings a touch of old-school charm to any home or theater setting.