The camera was introduced in 1970 and used Polaroid 100 pack film. The camera was used in the making of passport and placed two instant photos on one picture. The Simul Shot II is considered a Mini-portrait type camera. The focal distance is 1.2 M (3.9 feet) with the f/135 lenses with apertures of 4.5 to 22 that are manually adjusted by the five position lens rings. The camera uses a fixed speed electronic shutter that is coupled with a model number 01-112 OER strobe flash unit. The shutter and the flash unit are powered by 60HZ 110 volts US plug. It also has an optical viewfinder, on/off switch, shutter release button, and weighs in just under 25 pounds (11.3 Kilos/1.8 stone). The USA Company Optical & Electronic Research is categorized under Photography Equipment and Supplies. OER manufactured quality commercial photographic equipment, including Passport, Identification, and Special Events Cameras mostly based on Polaroid Instant Film. The company was based in Reston Virginia, 20 miles west of Washington DC. Mostly due to the proliferation of inexpensive digital cameras, OER ceased operations in late 2007.