This is a keychain from the Tamagotchi Uni, the bizarre egg-shaped Tamagotchi released a few years ago. It features Mimitchi and Mametchi. I won this when I was aiming for the Keitama (mobile Tamagotchi), so I've been storing it in a dark place. I'm selling it to organize my merchandise. I plan to package it to prevent water damage and ship it in an envelope. Search terms: Tamagotchi Mametchi Mimitchi Young Mametchi Young Mimitchi Gokurakuyu (hot spring) Rare Cute Ball chain