Here's a "Trivia no Izumi" (Trivia Fountain) Hee-Haw button from the Heisei era. It's an old item, so there are a few small scratches. The metal on the keychain is slightly tarnished. I haven't confirmed that it works. Batteries are not included. It seems to require three LR1130 button cell batteries. Please consider it as a junk item. m(_ _)m