This vintage Casio Mini Electronic Calculator CM-602 is a reliable and compact handheld device ideal for basic, financial, and scientific calculations. With the trusted Casio brand name, this calculator is a nostalgic piece that has been tested and confirmed to be in working order. Perfect for business, office, or industrial use, this calculator offers a convenient and functional tool for everyday tasks. The Casio FM-602 model is a classic choice for those seeking a durable and efficient electronic calculator.