Purchased from the Timefactors official website in 2021. This is a very popular model that sold out in minutes when it was released. The following is the product introduction from the official website. This is a machine-translated description. The watch in the 13-15 photos is not the one for sale. The Smith's Navigator is a faithful reproduction of the Mk 11. While following the original specifications of the Ministry of Aviation, it features higher antimagnetic properties (20,000A/m) and sapphire crystal. Case • 316L stainless steel, brushed finish, polished bezel • 36mm diameter • 46.4mm lug-to-lug height • 11.3mm thickness to the top of the crystal • 18mm lug width • Antimagnetic performance 20,000A/m • Water resistance 10 atm (100 meters/330 feet) • Weight 77g (including strap) • Full antimagnetic case, screw-back, drilled lugs Black Dial • Semi-matte black, white printed numerals • Triangle and cardinal indexes, Super-LumiNova X1-C3 Hands • Polished steel frame, luminous paint applied • Luminous paint: Super-LumiNova X1-C3 Crystal • Sapphire crystal, 30.7mm diameter x 1.8mm thickness, anti-reflective coating on the underside Movement • Sellita SW210 "Top" version, 19 jewels, manual winding, Incabloc, hacking seconds, fully decorated, 28,800 vibrations/hour • 5-position adjustment, daily rate ±4 seconds to ±15 seconds • Swiss Made Strap - Unused • Pigskin strap, push-button folding clasp Aviation HAMILTON KHAKI 9721B H704550 AVIATION IWC Mark Xi MARK Xi BREITLING BREITLING SINN SINN SEIKO PROSPEX CITIZEN PROMASTER SEIKO PROSPEX CITIZEN PROMASTER