Wrist size adjusted to 16 cm. Purchased from the Seiko Online Shop. Purchase date: December 2023. Movement Caliber No. V157 Driving system: Solar Accuracy: ±15 seconds per month on average Operating period: Approximately 10 months when fully charged Number of jewels: 2 Functions: ・Overcharge prevention function ・Instant-start function ・Calendar (date) function Case/Band Case material: Stainless steel Case size: Thickness: 10.7mm, Width: 42.8mm, Length: 49.2mm Glass material: Sapphire Lumibrite: Yes (hands, indexes, bezel) Clasp: One-push diver extender system Watch Specifications Water resistance: Air diving waterproof Magnetic resistance: Yes Weight: 167g Other features: ・"LIMITED EDITION" inscription on the case back ・Serial number on the case back ・Unidirectional rotating bezel ・Screw-down crown ・Polyester replacement band included ・Double-lock clasp ・Screw back