[Product Details] • Brand: Seiko • Model: Silverwave • Reference Number: 7121-7010 • Movement: Quartz • Period: 1980s (Circa 1980-1985) • Case Width: [　] cm (excluding crown) • Wrist Size: Approx. 17 cm (Approx. 6.7 inches) [Condition] • Movement: Currently running and fully functional. • Exterior: There are visible signs of wear, scratches, and dirt on the case and bracelet matching its age. Please carefully review the provided photos for the exact cosmetic condition before bidding. [Shipping] • Shipped from Japan via Japan Post with a tracking number.