The Ultimate Extreme Diver & A Piece of Swiss Watchmaking HistoryUp for sale is the legendary CX Swiss Military 20,000 FEET by Montres Charmex SA. This is not just a high-performance tool watch; it is a genuine Guinness World Record holder for the deepest diving mechanical timepiece ever created. -Inclusions (Nearly Complete Set): Includes the original inner and outer presentation boxes, the official COSC certificate papers, the original Guinness World Record certificate, the user manual, and the official Authentication Card. -Important Provenance & Rarity Note: Because this is the absolute last vault piece straight from the factory inventory of Montres Charmex, it was never sold through regular retail channels. Consequently, it does not include a stamped dealer warranty booklet—instead, it comes with its original factory authentication card. The secondary rubber diving straps and multi-tool are not included, which is fully reflected in this highly competitive price. This specific timepiece carries an extraordinary history for collectors. It was the absolute last 20,000 FEET model to ever leave the factory storage of Montres Charmex in Switzerland when the multi-generational family manufacturer closed its doors. -This is a rare opportunity to own a piece marking the literal end of an era for the historic brand. -Condition & Configuration: Dial: Striking black carbon-fiber dial. Case & Bracelet: Full titanium construction, keeping this engineering marvel comfortably wearable despite its massive presence. Movement: COSC-certified Swiss automatic chronograph (ETA Valjoux 7750), running flawlessly. Inclusions: Comes with the original inner and outer presentation boxes and the official factory papers. Please Note: The secondary diving straps and multi-tool accessory are not included, which is fully reflected in this highly competitive pricing. Engineering Marvel Specifications: Water Resistance: Certified to 20,000 feet / 6,000 meters (tested with a 25% safety margin up to 25,000 feet). Crystal: Massive, 10mm thick domed sapphire crystal built to withstand immense deep-sea pressure. Features: Built-in automatic helium escape valve, screw-down crowns, and high-legibility luminous markers. About the Pricing & Logistics: As a private Swiss collector, I have priced this timepiece realistically for a transparent and straightforward sale. I am open to reasonable offers via Chrono24’s secure platform, but please, no lowball offers.The watch will be packaged with extreme care and shipped securely with full tracking and insurance. Please review the high-resolution macro photographs, which clearly display the case condition and accompanying paperwork. Feel free to message me with any questions!