Seiko Astron – Ref. 8B63-0BA0 A sophisticated Seiko Astron equipped with the 8B63 solar-powered movement, known for its GPS-controlled timekeeping and perpetual calendar functionality. This model automatically adjusts to different time zones and maintains exceptional accuracy without needing battery replacement. Specifications: • Model: Seiko Astron 8B63-0BA0 • Movement: Seiko 8B63 (Solar / GPS / Perpetual Calendar) • Functions: GPS Time Sync, World Time, Perpetual Calendar, Dual Time Display • Case Material: Stainless Steel Condition: Excellent vintage condition with minor wear consistent with regular use. All functions including GPS and calendar work properly. Remarks: A perfect watch for frequent travelers or Seiko enthusiasts who appreciate the blend of advanced technology and elegant design. Shipped well-packaged and ready to wear.