**New Old Stock (NOS) may have worn packaging.** Sylvania Blue Dot Flash Bar for Polaroid SX-70, Flashbar has 10 Flashes with Flash indicators. Simply insert the Sylvania flash bar into your Polaroid SX-70, Keystone and other flash bar cameras and you are ready to take flash pictures. When you have used five flashes, remove bar and reinsert into cmera with unused side fadcing forward. The blue flash indicators on top of your Sylvania Flash Bar (one positioned above each lamp) indicate unflashed lamps. As the lamps are flashed the blue disappears. Now you can check unused flashes..."at a glance." Flash Bar can be removed at any time even though all fashes have not been used - when reinserting into the camera with used flahes facing forward, camera will automatically switch to unused flashbulbs on the side.