Winders
Two models of motor winder were produced. The original 110 Winder took 2 AA batteries and with a set could wind through 100 cartridges of 110 film. It worked only in single-shot mode. It took about 1.5 seconds to wind a frame. The 110 Winder II, introduced in 1982, added a continuous shooting mode and improved the battery cover door, which was rather fragile on the original.
Read more about this topic: Pentax Auto 110