Rolex Explorer II 42mm Steel 2...

The Rolex Explorer II Reference 216570 represents a significant evolution in the collection, introduced in 2011 to mark the 40th anniversary of the model. This 42mm version replaced the previous 40mm case, creating a more substantial presence while retaining the core tool-watch identity. The design is defined by its fixed 24-hour bezel, a feature exclusive to the Explorer II line, and the prominent orange 24-hour hand, a design cue that returned after being absent from the prior generation. The case and Oyster bracelet are crafted from 904L stainless steel, a corrosion-resistant alloy Rolex designates as Oystersteel. The finishing combines polished and brushed surfaces, with polished sides on the case and bracelet center links contrasting against the satin-brushed top surfaces and bracelet outer links. The black dial offers high legibility with Chromalight-filled hands and hour markers, emitting a long-lasting blue glow. Powering this watch is the Caliber 3187, a self-winding mechanical movement developed and manufactured by Rolex. This movement incorporates a Parachrom hairspring for increased resistance to shocks and magnetic fields, along with a Paraflex shock absorber system. The primary complication is the independently adjustable 24-hour hand, which works in conjunction with the fixed bezel to function as a GMT indicator. This allows the wearer to track a second time zone or differentiate between day and night when in low-visibility environments, a function originally intended for speleologists and polar explorers. The movement is a COSC-certified chronometer and, once cased, meets Rolex’s own stricter Superlative Chronometer standards, guaranteeing an accuracy of -2/ 2 seconds per day. This particular example is in mint condition, showing no visible signs of wear on the case, bracelet, or clasp. It is presented with its original Rolex warranty card, a critical element for authentication and future service. The Explorer II 216570, especially in this black dial configuration, has become a highly sought-after reference since its discontinuance. Its 42mm case size and distinctive orange GMT hand make it a modern classic. As a discontinued model from a core professional line, its collectibility is well-established. It occupies a strong position in the market, appealing to collectors seeking a robust, functional timepiece with a clear and limited production history, making it a sound acquisition from both an ownership and investment perspective.