Swiss 25 Jewel ETA automatic movement (same movement that is used in genuine Rolex Tudor Submariners). Serial number (accurate) and model number engraved between the lugs. Hack mechanism (second hand stops when crown is pulled out to set the time standard feature on all genuine Rolexes). Genuine sapphire crystal. High-grade full, solid stainless steel band, case and crown (not stainless steel coated). Genuine triple wrapped 18k gold - the highest grade available with perfect tone and feel. Laser etched Rolex Logo on sapphire crystal at 6 o'clock position. Band is linked by threaded screws, not pins, with triple wrapped 18K gold hollow links identical to the original. Unidirectional turning bezel. Solid back with green Rolex holographic sticker and model number. Limited Edition red second hand. Solid screw-down back removable by genuine Rolex tool. Closed 6s and 9s on date-wheel. Laser printed dial. LARGE 2.5X Date Magnification, as per the ORIGINAL Yachtmaster. Bidirectional turning bezel, exactly as per original Yachtmaster. One-piece solid screw down crown with Rolex engraving, trip-lock. Perfect weight and feel.