★ This is a completely non-functional, junk item. Please be sure to check the contents. This is an analog stopwatch from SEIKO. It's an old quartz model with a 1/5 second timer, likely from the **Showa to early Heisei era (around the 1980s-1990s)**. 【Operating Condition】 ・Checked with an LR44 battery installed. ・The hands do not move at all. ・START/STOP/RESET all unresponsive. ・Not due to a dead battery. → This is a completely non-working junk item, intended for repair or parts. 【Condition】 ・Numerous scratches and scuffs due to aging. ・Internal condition unknown. ・Sold as is. 【About the Number】 ・The back cover is stamped with "8A20-0010". ※ The model number is not listed. ※ This is likely a part number. 【Important】 ・No operational guarantee. ・No returns or refunds. ・Please purchase only if you understand this is a junk item. ・Please refrain from purchasing if you are looking for a fully functional item. Old SEIKO stopwatches have a certain demand for repair purposes, parts, and as retro equipment. Will be shipped without a battery. Instant purchase OK.