This vintage Casio electronic calculator NS-3 is a rare find from Japan, boasting a classic design and functionality. With a handheld size and regular display and key size, this calculator is perfect for those who appreciate the simplicity and style of older technology. Powered by both solar and battery sources, this Casio calculator is a reliable tool for everyday calculations. Ideal for collectors or those looking for a retro addition to their office equipment collection, this working calculator is a testament to the quality and craftsmanship of Casio products.