For horology enthusiasts and adventurers alike, the Rolex Explorer II 216570 stands as a beacon of robust functionality and timeless design. This iconic timepiece, often referred to as the "Polar Explorer" due to its striking white dial variant, represents a significant chapter in the Explorer II lineage, bridging the gap between classic heritage and modern watchmaking prowess. In this comprehensive guide, we'll delve deep into the intricacies of the 216570, exploring its history, design features, technical specifications, market value, and why it remains a coveted watch for collectors and everyday wearers.

The Legacy of the Explorer II: From Caves to Peaks

To truly appreciate the Rolex Explorer II 216570, understanding its origins is crucial. The Explorer II was first introduced in 1971 with the reference 1655. Born from the spirit of exploration and designed for speleologists navigating dark caves, the original Explorer II featured a fixed 24-hour bezel and an additional 24-hour hand linked to the hour hand. This functionality was specifically engineered to differentiate between AM and PM in environments devoid of sunlight, a critical feature for cave explorers spending extended periods underground.

Over the years, the Explorer II evolved through several iterations, each building upon the core principles of robustness, legibility, and functionality. References like the 16550 and 16570 further refined the design and movement, paving the way for the arrival of the Rolex Explorer II 216570 in 2011. This model marked a significant leap forward, both aesthetically and technically, while staying true to the Explorer II's adventurous DNA.

Introducing the Rolex Explorer II 216570: A Modern Masterpiece

The Rolex Explorer II 216570 was released as part of Rolex's revamped sports watch collection, and it immediately resonated with watch enthusiasts. It represented a bold step forward in size and modernity compared to its predecessor, the 16570, while retaining the core essence of the Explorer II. Let's break down the key features that make the 216570 so compelling:

Enhanced Case Size and Presence

One of the most immediately noticeable differences between the 216570 and earlier Explorer II models is its increased case size. The 216570 boasts a 42mm diameter, a significant jump from the 40mm of the 16570. This larger size provides a more contemporary wrist presence, catering to modern preferences for larger watches while also enhancing legibility. The case is crafted from Rolex's signature 904L stainless steel (now Oystersteel), renowned for its exceptional corrosion resistance and durability, ensuring the watch can withstand the rigors of daily wear and adventurous pursuits.

The Iconic 24-Hour Bezel and GMT Functionality

Staying true to its Explorer II heritage, the 216570 features a fixed, stainless steel 24-hour bezel. This bezel, coupled with the distinctive orange 24-hour hand, is the hallmark of the Explorer II. The 24-hour hand completes one rotation every 24 hours, pointing to the fixed bezel to indicate the hour in a 24-hour format. This functionality is incredibly useful for travelers tracking a second time zone or for anyone needing to distinguish between AM and PM at a glance. The GMT (Greenwich Mean Time) function, a core feature of the Explorer II, is seamlessly integrated into the 216570, making it a practical tool for global citizens.

Dial Options: Polar White and Black

The Rolex Explorer II 216570 is available in two dial variations: black and white (often referred to as "Polar"). Both dials offer exceptional legibility, a crucial characteristic for a watch designed for explorers.

• Polar White Dial: The white dial version is arguably the more iconic and sought-after variant. The stark white background provides a high-contrast backdrop for the black hour markers and hands, ensuring excellent readability in all lighting conditions. The orange 24-hour hand adds a vibrant pop of color and further enhances visibility.
• Black Dial: The black dial variant offers a more classic and understated aesthetic. The luminous hour markers and hands stand out against the black background, providing excellent nighttime legibility. The orange 24-hour hand again provides a distinctive visual element.

Both dial options feature Rolex's Chromalight display, a highly legible luminescent material that emits a long-lasting blue glow, ensuring optimal readability in low-light environments.

The Caliber 3187 Movement: Precision and Reliability

Powering the Explorer II 216570 is the Rolex caliber 3187, a robust and reliable self-winding mechanical movement entirely developed and manufactured by Rolex. This movement is a significant upgrade from the caliber 3185/3186 found in previous Explorer II models. The Caliber 3187 features:

• Chronometer Certification: Like all Rolex Oyster Perpetual movements, the Caliber 3187 is a certified Swiss chronometer, having passed rigorous precision tests by the COSC (Swiss Official Chronometer Testing Institute).
• Parachrom Hairspring: The movement incorporates Rolex's patented blue Parachrom hairspring, made from a paramagnetic alloy. This hairspring is highly resistant to magnetic fields and temperature variations, enhancing the watch's accuracy and reliability.
• Paraflex Shock Absorbers: Rolex's high-performance Paraflex shock absorbers provide superior protection against shocks and impacts, further contributing to the movement's robustness and longevity.
• Approximately 48-hour Power Reserve: The Caliber 3187 offers a practical power reserve of around 48 hours, meaning the watch will continue running for approximately two days when fully wound, even if not worn.

The Caliber 3187 is a testament to Rolex's commitment to horological excellence, providing the Explorer II 216570 with exceptional accuracy, reliability, and longevity.

The Oyster Bracelet and Easylink Comfort Extension

The Explorer II 216570 is fitted with Rolex's iconic Oyster bracelet in 904L Oystersteel. This robust and comfortable bracelet is known for its durability and secure Oysterlock clasp, preventing accidental opening. Furthermore, the bracelet features the Easylink comfort extension system, allowing the wearer to easily adjust the bracelet length by approximately 5mm without the need for tools. This is particularly useful for adapting to changing wrist sizes due to temperature fluctuations or activity levels.

Why the Explorer II 216570 Remains Highly Sought After

Despite being discontinued in 2021 and replaced by the 226570, the Rolex Explorer II 216570 continues to be highly sought after in the pre-owned market. Several factors contribute to its enduring appeal:

• Modern Proportions: The 42mm case size resonates with contemporary tastes and provides a comfortable and substantial wrist presence.
• Iconic Design: The Explorer II design, particularly the Polar white dial with the orange hand, is instantly recognizable and highly desirable.
• Robust Functionality: The GMT function, 24-hour bezel, and robust construction make it a practical and versatile watch for travel and everyday wear.
• Rolex Heritage: As a Rolex sports watch, the 216570 benefits from the brand's unparalleled reputation for quality, reliability, and prestige.
• Investment Potential: Like many Rolex sports models, the 216570 has shown strong value retention and appreciation in the pre-owned market, making it an attractive piece for collectors and investors.
• Transitional Model Significance: Being the last of its generation before the 226570 with the updated movement and minor design tweaks, some collectors appreciate the 216570 for its place in Rolex's evolution.

Rolex Explorer II 216570: Who is it for?

The Rolex Explorer II 216570 appeals to a wide range of individuals, including:

• Watch Enthusiasts and Collectors: Its iconic design, Rolex heritage, and investment potential make it a desirable addition to any watch collection.
• Travelers and Global Citizens: The GMT function and robust construction make it an ideal travel companion.
• Adventurers and Outdoor Enthusiasts: Its durability, legibility, and functionality are well-suited for outdoor activities and exploration.
• Individuals Seeking a Versatile Everyday Watch: Its sporty yet refined design allows it to be worn comfortably in a variety of settings, from casual to more formal.
• Those Appreciating Modern Rolex Design: The 42mm size and contemporary aesthetic make it appealing to those who prefer modern watch proportions.

Pros and Cons of the Rolex Explorer II 216570

Pros:

• Iconic and recognizable design.
• Robust and durable construction.
• Highly legible dial (especially the Polar white).
• Practical GMT functionality.
• Comfortable Oyster bracelet with Easylink extension.
• Reliable and accurate Caliber 3187 movement.
• Strong value retention and potential appreciation.

Cons:

• Larger 42mm size may not suit all wrist sizes.
• Fixed bezel means no timing functionality beyond the 24-hour scale.
• Discontinued model, primarily available in the pre-owned market.
• Can be expensive to acquire in the pre-owned market due to high demand.

FAQ about the Rolex Explorer II 216570

Conclusion: The Enduring Appeal of the Explorer II 216570

The Rolex Explorer II 216570 successfully modernized the Explorer II lineage while staying true to its adventurous spirit and functional design. Its larger size, robust movement, iconic dial options, and practical GMT function have solidified its place as a highly desirable sports watch within the Rolex catalog and the wider horological world. While no longer in production, its legacy lives on, and the 216570 remains a testament to Rolex's enduring commitment to quality, innovation, and timeless design. For those seeking a robust, versatile, and iconic timepiece with a rich history, the Rolex Explorer II 216570 continues to be a compelling choice.