The Rolex Explorer II, a watch synonymous with adventure and exploration, has a rich history marked by significant evolutions in its design and movement. The reference 16570, produced from 1989 to 2011, holds a particularly special place in the hearts of collectors and enthusiasts. This article delves deep into the heart of this iconic timepiece, focusing specifically on the Caliber 3186 movement that powered a significant portion of its production run. We'll explore its technical specifications, compare it to its predecessor, and examine what makes the 16570 with the 3186 movement such a desirable piece.
Before we dive into the specifics of the Caliber 3186, let's briefly set the stage with a look at the Rolex Explorer II's lineage and the 16570's place within it. The Explorer II's story begins in 1971 with the reference 1655, a watch designed with explorers and cave divers in mind. Its key feature was the independently adjustable 24-hour hand, crucial for differentiating between day and night in low-light conditions, a feature that remains a hallmark of the Explorer II to this day. The 1655, with its acrylic crystal and distinctive "maxi" dial, paved the way for future iterations.
The reference 16550, often considered a transitional model, followed in 1984. While retaining the core functionality of its predecessor, the 16550 incorporated several improvements, including a sapphire crystal for enhanced scratch resistance and a slightly updated case design. This model, while less common than the 16570, is a sought-after piece in its own right, and a worthy subject for a separate in-depth Rolex Explorer 16550 review.
The Rolex Explorer II 16570 represents a significant leap forward. Introduced in 1989, it marked a shift towards a more refined and robust design. The 16570's case, slightly larger than its predecessors, offered improved wearability and water resistance. The dial designs varied subtly throughout the production run, with some featuring larger luminous indices and hands ("maxi dial"), while others maintained a more classic appearance. The most significant change, however, was under the hood.
Initially, the 16570 was equipped with the Caliber 3085, a robust and reliable movement known for its accuracy and longevity. However, this movement was eventually replaced by the Caliber 3186, a significant upgrade that elevated the 16570 to new heights. This transition occurred around 2005, marking a pivotal moment in the 16570's history. The shift to the 3186 signaled Rolex's commitment to continuous improvement and innovation.
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