Pocket Digimon World - Cool & Nature Battle Disc Japan

The PocketStation is a peripheral by Sony Computer Entertainment for the PlayStation home video game console. Categorized by Sony as a miniature personal digital assistant, the device features a monochrome liquid crystal display (LCD), infrared communication capability, a real-time clock, built-in flash memory, and a sound capability. Connecting to a PlayStation through a memory card slot, the PocketStation also functions as a PlayStation memory card. It was released exclusively in Japan on January 23, 1999.