• Brand: Rolex • Model: Oyster Perpetual 31 , In "Excellent" condition. Like New. All functions work perfectly. "Very Classy, Exclusive and Prestigious Model. From Luxury and High-End Timepiece Brand , Rolex." • Reference Number: 67480 • Serial Number: S7***64 • Production Year: 1993 • Movement: Automatic, Works perfectly. Impeccable at timing. Tested on Timegrapher. > Rolex Cal. 2130 In-house Movement > 29 Jewels > Adjusted 5 Positions and Temperature > Power Reserve: 42 Hours > Chronometer Certified (COSC) Movement In order for a watch to put the term Chronometer on its dial, it must pass the Official Swiss Chronometer Testing Institute, namely the COSC. To measure the movement and precision of a watch, COSC places it at different temperatures and inspects it for days under varying conditions. The result should be no more than -4 or +6 seconds of deviation per day. Of course, this is not an easy thing to achieve. So much so that only 3% of the Chronometer watch models produced in Switzerland can get a certificate. • Crystal: Sapphire, Scratch free. In Excellent Condition. • Swiss Made, Fully Original • Case & Bracelet: Stainless Steel "Oyster case was the world's first waterproof case made for a wristwatch." • Dial: Silver, In "Excellent" condition. Spotless. Restored Dial. • Case Diameter: 31 mm. (Excl. Crown) • Wrist Size: 16 cm. • Screw-down lockable crown • Crown: Original Rolex • Folding and Lockable Clasp • Bracelet: Original Rolex Oyster Bracelet • Clasp: Original, Rolex signed. • All functions work perfectly. • The watch is in "Excellent" condition. There is no scratch on the glass. It is as seen in the photos. Very Exclusive, Classy and Elegant Wristwatch. • Box: The watch will be sent with 100% Genuine Leather travel box. • Shipping: FREE • Registered and Insured Shipping with Tracking Code in 1-3 days.