The Rolex Explorer II reference 1655 holds a unique place in horological history, a testament to Rolex's commitment to robust functionality and enduring style. Released in 1971, this watch wasn't just a refinement of its predecessor; it represented a significant leap forward in the evolution of the Explorer line, catering specifically to the needs of explorers and adventurers venturing into challenging environments, particularly those lacking ample sunlight. Understanding the 1655 requires delving into its technical specifications, its design evolution, its cultural impact, and its enduring appeal to collectors today.
The Heart of the Beast: Caliber 1575
The Rolex Explorer II 1655 is powered by the legendary 26-jewel Caliber 1575 movement. This automatic, self-winding movement was a crucial component in the watch's success. Known for its reliability and robustness, the Caliber 1575 was designed to withstand the rigors of extreme conditions. Its accuracy and longevity were critical for explorers relying on their timekeeping in challenging situations. Unlike many movements of its era, the Caliber 1575 offered a relatively high level of shock resistance, a key feature for a watch intended for demanding use. Its robust construction, coupled with Rolex's rigorous testing protocols, ensured that the 1655 could handle the bumps and jolts of exploration without compromising its functionality. The movement's performance is a testament to Rolex's engineering prowess and its commitment to producing timepieces capable of enduring extreme environments. The smooth, reliable operation of the Caliber 1575 is a significant contributor to the 1655's enduring legacy.
Distinct Design Features: Form Follows Function
The 1655’s design wasn't merely aesthetic; it was meticulously crafted with functionality in mind. Several key features distinguish it from its predecessors and cemented its place as a tool watch par excellence:
* The 24-Hour Hand: This is perhaps the most defining characteristic of the 1655. The independent 24-hour hand, often referred to as the "GMT" hand, allows for easy differentiation between AM and PM, even in low-light conditions. This feature proved invaluable for explorers navigating in caves or other environments where distinguishing between day and night was crucial for safety and orientation. The orange hand against the dial, especially on certain variations, offers striking contrast and immediate readability.
* The Fixed Bezel: Unlike the rotating bezels found on many other Rolex models, the 1655 features a fixed bezel with graduated markings. This eliminates the risk of accidental bezel rotation during activity, ensuring that the time remains accurate and reliable. The markings on the bezel offer further functional utility, aiding in time calculations and navigation.
* The Case and Crystal: The 36mm stainless steel case, while relatively smaller than many modern sports watches, was perfectly sized for the era and provided robust protection for the movement. The acrylic crystal, while susceptible to scratching, offered a degree of impact resistance. The overall construction aimed for durability and practicality, prioritizing functionality over mere aesthetics.
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