The Horizon was produced in two formats: the 205pc, which took 50.5×110 mm wide frames on 120 film and the 202, which took 24×58 mm wide frames on perforated 35 mm film. The 202 has recently been superseded by the S3pro, which is a redesigned improved camera with silent rotation and more exposure times.
An older version called the Horizont, produced in the Soviet Union in the 1960s, had an all-metal, rectangular body and a removable viewfinder. The technology of the "202" is basically the same, but the body covering is plastic, and has an integrated viewfinder. Thus, it is rather larger than the original Horizont. Additionally, the 202 features a slow-speed shutter mechanism, with exposure times of 1/2, 1/4, 1/8, 1/60, 1/125, 1/250 of a second, S3-Pro: 1/250, 1/125, 1/60, 1/30, 1/8, 1/4, 1/2, 1 sec, slower rotation than 202, silent rotation.