The Polaroid Model 20 "Swinger" was a popular Land Camera produced by the Polaroid Corporation between 1965 and 1970. At $19.95 USD it was the first truly inexpensive instant camera, a fact that helped fuel its enormous popularity and made it one of the top-selling cameras of all time. The Swinger was especially successful in the youth market due to its low price, stylish appearance, and catchy "Meet the Swinger" jingle. The Swinger featured an innovative exposure meter which displayed the word "YES" in a window below the viewfinder when the exposure was set correctly. Earlier models also displayed the word "NO" when not properly adjusted, while later units used only the YES indicator. The Swinger also included a built-in flashgun for AG-1 flashbulbs. The Swinger used Polaroid's 20-Series roll film, which was the first Polaroid roll film to develop outside the camera. Variants included the Model M-15 "Swinger Sentinel", which was a cheaper Swinger without the built-in flash, and the Model 3000 "Big Swinger", which used 100-Series pack film instead of the old-style roll film. The Swinger name was also used on several international-market Polaroid cameras in the 1960s and 1970s.
