Pocket Sakura

About

Pocket Sakura is a Sakura Taisen-themed LCD digital pet developed by Jupiter and published by Media Factory, and released exclusively in Japan in June 2000. It tracks the wearer's steps with a built-in pedometer and allows for connectivity with the Game Boy Color game Sakura Taisen GB: Geki Hanagumi Nyuutai! for unlocking bonus content in that game.

Source: IGDB