(Showa Retro Item) Citizen Quartz 4RT600 60-minute timer Found during a thorough cleaning of my parents' house. My parent received this from their company in 1985 (Showa 60). Runs on one AA battery. Operation confirmed. *Battery not included. Instruction manual and warranty (expired) included. Although it's unused, it has been stored at home, so please understand the condition of the item before purchasing.