The Casio Personal-mini-calculator from 1975 is a vintage electronic device that fits in the palm of your hand. With its compact size and retro design, this calculator is perfect for collectors or those looking for a nostalgic piece of technology. The Casio brand is well-known for producing durable and reliable electronics, making this calculator a valuable addition to any vintage electronics collection. Tested - works great!  This item runs on two AA batteries or can be used with an AD-2S AC Adapter (not included).