This is a SEIKO "SPIRIT" AGS model. AGS (Automatic Generating System) is a unique and groundbreaking technology developed by Seiko, a quartz mechanism that generates and stores electricity from the movement of the wrist, and is the precursor to "Kinetic." This item has a see-through back, allowing you to enjoy the movement of the beautiful gold rotor, making it a rare and highly designed piece. 【Product Details】 ・Brand: SEIKO ・Model: SPIRIT AGS ・Model Number: 5M22-6A70 ・Case Diameter: Approximately 35mm (excluding the crown) ・Wrist Size: Approximately 17.5cm (three-fold buckle type. Fine adjustment of a few mm is possible) ・Color: Silver x Gold (combination color) 【Condition/Operation】 ・Operation is unconfirmed at the time of listing. ・Due to the aging of the watch, such as the lifespan of the secondary battery, it is listed as a "junk item" without any operational guarantee. ・The exterior has no noticeable damage for its age, but there are scratches, small scratches, minor dirt, and age-related changes in the metal overall. ・There are also fine scratches on the crystal (glass surface). ・Please check the details in the photos. This item is being sold to organize a collection of antique watches and vintage items. Please purchase with the assumption that repair, parts replacement, or maintenance will be required. ★Bulk purchases are welcome! You can view the watches I am selling from this tag. ↓↓↓ #とつかみんの時計 We will consider a discount for set purchases, so please feel free to comment. 21 #SEIKO #セイコー #SPIRIT #AGS #ヴィンテージウォッチ #アンティーク腕時計 #裏スケ #ジャンク