The Rolex Explorer II, a watch synonymous with adventure and resilience, boasts a rich history marked by significant design and functional evolutions. While the reference number 16579 isn't directly part of the Explorer II lineage (the 16570 is the closest direct predecessor), understanding its predecessors, the 1655 and 16550, is crucial to appreciating the watchmaking philosophy that culminated in the models that followed. This article delves into the history of the Explorer II, focusing on the key advancements that led to the highly sought-after 16570 and its subsequent iterations, touching upon related aspects like dimensions, pricing, and comparisons with later models. We will also explore the features and specifications commonly associated with the 16570, although the 16579 itself doesn't exist within the official Rolex Explorer II family.
The Genesis of the Explorer II: Ref. 1655 (1971)
The story begins in 1971 with the introduction of the reference 1655, a watch designed specifically for spelunkers and cave explorers. This groundbreaking timepiece marked a departure from the standard Explorer I, adding a crucial feature: an independently adjustable 24-hour hand. This addition wasn't merely an aesthetic choice; it was a functional necessity for those venturing into environments where distinguishing between day and night was paramount for safety and navigation. Imagine being deep underground, relying solely on your watch to track the passage of time and avoid getting lost in the darkness. The 24-hour hand provided a clear, unambiguous indication of AM or PM, irrespective of the regular hour and minute hands. The 1655 was exclusively available with a black dial, reflecting the rugged and utilitarian nature of its intended use. Its robust construction and reliable movement ensured it could withstand the harsh conditions encountered during exploration. The design, while functional, was distinctly different from the more refined aesthetic of other Rolex models at the time, highlighting its purpose-driven nature.
The Evolution: Ref. 16550 (1985)
In 1985, Rolex refined the Explorer II with the introduction of the reference 16550. This iteration retained the crucial 24-hour hand, but several improvements were incorporated. The most notable change was the introduction of the GMT dual-time function, further enhancing its versatility. While the 1655 primarily focused on AM/PM indication for spelunking, the 16550 broadened its appeal by allowing users to track two different time zones simultaneously. This made it a more practical tool for travelers and adventurers beyond the confines of caves. The 16550 also became available with different dial colors, expanding its aesthetic appeal beyond the solely utilitarian black dial of its predecessor. This marked a shift towards a slightly more polished and versatile design, while maintaining the rugged durability that defined the Explorer II line. The movement was upgraded, offering improved accuracy and reliability. The increased versatility of the 16550 solidified the Explorer II's place as a robust and functional tool watch for a wider range of users.
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