With the debut of the Explorer II in 1971, Rolex solidified its position not just as a purveyor of luxury timepieces, but as a critical partner in the realm of exploration and endurance. This rugged, purpose-built watch, designed for spelunkers and adventurers venturing into challenging environments, represents a pinnacle of horological engineering and a testament to Rolex's unwavering commitment to functionality and resilience. The Explorer II's story is one of constant evolution, punctuated by key design updates and technological advancements, yet consistently maintaining the core principles that defined its original purpose.
A Brief History and the 1971 Debut:
The Rolex Explorer, introduced in 1953, had already established a reputation for reliability and accuracy in extreme conditions. However, the needs of explorers venturing into caves and other environments with limited or no natural light necessitated a more specialized tool. This led to the creation of the Explorer II, a watch designed to tackle the unique challenges of extended subterranean exploration. The 1971 release marked a significant step forward, incorporating a second time zone function – a crucial feature for navigating the complexities of time during extended expeditions. This independent 24-hour hand, often referred to as the GMT hand, allowed explorers to easily distinguish between day and night, even in the absence of external light cues. This innovation, combined with the watch's robust construction and high precision, immediately established the Explorer II as a benchmark for professional-grade timekeeping in demanding environments.
Rolex Explorer II Models: A Chronological Overview:
The Rolex Explorer II has undergone several iterations over the years, each building upon its predecessor's strengths and incorporating advancements in materials and technology. Understanding the different models helps appreciate the evolution of this iconic watch.
* Reference 1655 (1971-1984): The original Explorer II, this reference featured a distinctive orange 24-hour hand, a fixed bezel with a graduated 24-hour scale, and a case diameter of 39mm. This model is highly sought after by collectors due to its historical significance and unique aesthetic. The matte black dial, often showing some patina over time, contributes to its allure.
* Reference 16550 (1984-1989): This reference saw the introduction of a sapphire crystal, a significant improvement in scratch resistance compared to the acrylic crystal used in the 1655. The orange 24-hour hand remained, and the overall design remained largely consistent with its predecessor.
* Reference 16570 (1989-2011): This marked a substantial change. The 16570 introduced a larger 40mm case, providing improved legibility and wearability. The orange 24-hour hand was replaced with a white hand, a change that initially met with some resistance from enthusiasts but ultimately became synonymous with the later models. This generation also saw the use of the improved Caliber 3185 movement.
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