The Oyster bracelet is characterized by its flat, three-piece links, renowned for their strength and comfort. Typically crafted from 904L stainless steel (Rolex's proprietary blend known for its exceptional corrosion resistance and luster), the Oyster bracelet on the Explorer II is built to withstand the rigors of daily wear and adventurous pursuits. The links are meticulously machined and hand-assembled, ensuring a precise and solid construction. Early Explorer II models (references 1655 and 16550) featured folded link Oyster bracelets, while later models (references 16570, 216570, and 226570) transitioned to solid link bracelets, offering increased durability and a more substantial feel.

Key features of the Oyster bracelet on modern Explorer II models include:

• Solid Links: Providing enhanced strength and a premium feel.
• Oysterlock Clasp: A robust and secure clasp designed to prevent accidental opening, often featuring a safety catch.
• Easylink Comfort Extension System: Allows for quick and easy adjustment of the bracelet length by approximately 5mm, ideal for changes in wrist size throughout the day or when wearing over a wetsuit or jacket.
• Brushed Finish: The predominantly brushed finish on the Oyster bracelet (with polished sides on some older models) contributes to its tool-watch aesthetic and minimizes the appearance of scratches.

These design elements are not just stylistic choices; they are functional necessities, reflecting the Explorer II's purpose as a reliable tool watch for exploration and adventure.

The Oyster bracelet on the Explorer II has evolved over its production history, reflecting advancements in materials and manufacturing techniques. Early models like the Reference 1655 featured a more vintage-style Oyster bracelet, often with hollow center links and a less substantial clasp. As Rolex refined its designs, subsequent Explorer II models received upgraded Oyster bracelets with solid end-links and more robust clasps. The transition to 904L steel in later references further enhanced the bracelet's durability and resistance to wear and tear.

The introduction of the Easylink comfort extension system in more recent models (like the 216570 and 226570) marked a significant improvement in user-friendliness, allowing for on-the-fly adjustments without tools. These incremental improvements demonstrate Rolex's commitment to continuous refinement and enhancing the wearing experience of the Explorer II.

The Oyster bracelet is undeniably a cornerstone of the Rolex Explorer II's appeal, but like any bracelet, it has its advantages and disadvantages:

Pros:

• Durability: Built to withstand daily wear and tear, as well as more demanding activities.
• Comfort: Despite its robustness, the Oyster bracelet is generally comfortable for extended wear, especially with the Easylink system.
• Security: The Oysterlock clasp provides a secure closure, minimizing the risk of accidental opening.
• Aesthetic Appeal: The classic Oyster bracelet is intrinsically linked to the Rolex sports watch aesthetic, offering a timeless and versatile look.
• Value Retention: Original Rolex Oyster bracelets contribute to the overall value and collectability of the Explorer II.

Cons:

• Weight: The solid construction of the Oyster bracelet can make it feel heavier on the wrist compared to leather or fabric straps.
• Less Breathable in Hot Climates: Metal bracelets can sometimes feel less breathable in hot and humid conditions compared to straps.
• Potential for Scratches: While 904L steel is scratch-resistant, it's not scratch-proof and can accumulate hairline scratches over time, though these can often be polished out.
• Limited Customization (Historically): For a long time, the Oyster bracelet was the primary and often only band option directly from Rolex for the Explorer II. However, the aftermarket offers more variety.

Despite these minor drawbacks, the Oyster bracelet remains the quintessential choice for the Rolex Explorer II, perfectly complementing its rugged character and intended purpose.

Pairing a leather strap with a Rolex Explorer II can inject a touch of sophistication and warmth into its inherently sporty aesthetic. Leather straps, particularly in brown or black, can soften the watch's tool-watch appearance, making it more suitable for dressier occasions or for those who prefer a more classic style. Considerations when choosing a leather strap for your Explorer II:

• Style: Choose a leather strap style that complements the Explorer II's design. Simple, understated leather straps in calfskin or alligator are often excellent choices. Avoid overly ornate or dressy straps that might clash with the watch's rugged nature.
• Color: Brown leather straps can create a warmer, vintage-inspired look, while black leather offers a more formal and versatile option.
• Width: Ensure the strap width matches the lug width of your Explorer II (typically 20mm or 21mm depending on the reference).
• Buckle: Consider using a Rolex-style buckle or tang buckle for a cohesive look. Aftermarket options are widely available.

Leather straps can be a great way to dress up your Explorer II for evenings or occasions where a sportier look is less appropriate. However, remember that leather is less water-resistant and durable than the Oyster bracelet, so it's not ideal for rigorous activities or water sports.

NATO straps, originally designed for military use, offer a rugged and highly versatile alternative for the Rolex Explorer II band. Made from durable nylon, NATO straps are known for their strength, comfort, and affordability. They come in a wide array of colors and patterns, allowing for significant personalization. Benefits of NATO straps for the Explorer II:

• Sporty and Casual Look: NATO straps enhance the Explorer II's tool-watch aesthetic, making it even more sporty and casual.
• Comfort: Nylon NATO straps are lightweight and breathable, making them comfortable in warm weather and during physical activity.
• Durability: Nylon is a robust material that can withstand wear and tear.
• Security: The pass-through design of NATO straps provides an extra layer of security – even if one spring bar fails, the watch head will remain secured by the second spring bar.
• Affordability: NATO straps are significantly more affordable than metal bracelets or high-end leather straps.
• Easy to Change: NATO straps are incredibly easy to swap out, allowing you to quickly change the look of your Explorer II.

NATO straps are an excellent choice for those who want a more casual, sporty, and customizable look for their Explorer II. They are particularly well-suited for outdoor activities, travel, and everyday wear.

For the ultimate in durability and water resistance, rubber straps are a fantastic option for the Rolex Explorer II band, especially if you frequently engage in water sports or activities where your watch might be exposed to harsh conditions. High-quality rubber straps, often made from vulcanized rubber, are resistant to water, sweat, UV rays, and chemicals. Advantages of rubber straps on the Explorer II:

• Water Resistance: Rubber straps are completely waterproof, making them ideal for swimming, diving, and other water activities.
• Durability: Resistant to tearing, cracking, and degradation from various elements.
• Comfort: Modern rubber straps are often designed for comfort and flexibility, even in demanding conditions.
• Easy to Clean: Rubber straps are easy to clean with soap and water, maintaining hygiene and appearance.
• Sporty Aesthetic: Rubber straps further enhance the Explorer II's sporty and tool-watch character.

Consider reputable brands specializing in watch straps for high-quality rubber options designed to fit Rolex models. These straps often feature curved ends that seamlessly integrate with the Explorer II case for a more integrated and refined look.

While the Oyster bracelet is dominant, some owners may explore aftermarket metal bracelet alternatives. However, it's crucial to exercise caution and ensure compatibility and quality. Third-party manufacturers may offer bracelets that mimic the Oyster style or even explore variations like jubilee-style bracelets, but these are not officially endorsed by Rolex. If considering a non-Rolex metal bracelet, prioritize reputable brands known for quality and precise fitment. Be aware that using aftermarket bracelets may potentially affect warranty or resale value, and ensure proper installation to avoid damaging the watch case.

Your daily activities and lifestyle should heavily influence your band choice. If you're frequently active, engage in sports, or work in demanding environments, the Oyster bracelet or a durable rubber strap are likely the most practical choices. For office environments or more formal settings, a leather strap might be preferable. If you want maximum versatility for different situations, having a few different band options to swap between is a great strategy.

Personal style is a significant factor. Do you prefer a classic and understated look, or something more sporty and casual? The Oyster bracelet provides a timeless and versatile aesthetic. Leather straps can add elegance, while NATO and rubber straps lean into a more rugged and sporty vibe. Choose a band that aligns with your personal taste and the overall look you want to achieve.

Consider the primary purpose of your Explorer II. If you intend to use it as a true tool watch for exploration, outdoor adventures, or water sports, prioritize durability and water resistance. The Oyster bracelet or a high-quality rubber strap are best suited for these scenarios. If your Explorer II is primarily for everyday wear and occasional dressier occasions, a leather strap or the Oyster bracelet might be more appropriate.

Budget is always a consideration. Genuine Rolex Oyster bracelets are expensive to replace if purchased separately. Aftermarket options, including leather, NATO, and rubber straps, offer a wider range of price points. Factor in the cost of the band when making your decision. Investing in quality is generally recommended, especially if opting for aftermarket metal bracelets, to ensure proper fit and avoid damaging your watch.

Cleaning your Oyster bracelet is relatively straightforward:

1. Mild Soap and Water: Use lukewarm water and a mild dish soap.
2. Soft Brush: Gently scrub the bracelet with a soft toothbrush or a specialized watch cleaning brush, paying attention to the links and clasp areas where dirt and grime can accumulate.
3. Rinse Thoroughly: Rinse the bracelet thoroughly with clean water to remove all soap residue.
4. Dry Completely: Dry the bracelet with a soft, lint-free cloth. Ensure it's completely dry before wearing it to prevent moisture buildup and potential corrosion (though 904L steel is highly resistant).
5. Optional: Ultrasonic Cleaner: For a deeper clean, you can use an ultrasonic cleaner, but exercise caution and follow the manufacturer's instructions. Avoid using harsh chemicals or abrasive cleaners.

Regular cleaning every few weeks, or more frequently if exposed to sweat or dirt, will keep your Oyster bracelet looking pristine.

Maintenance varies for different strap materials:

• Leather Straps: Avoid prolonged exposure to water and extreme temperatures. Clean leather straps with a leather cleaner and conditioner periodically to keep them supple and prevent drying and cracking.
• NATO Straps: Nylon NATO straps are easily cleaned with mild soap and water. They can even be hand-washed or placed in a garment bag and machine-washed on a gentle cycle. Allow them to air dry completely.
• Rubber Straps: Rubber straps are very low maintenance. Simply rinse them with soap and water as needed. Avoid harsh chemicals or solvents.

For major cleaning, repairs, or band replacements, it's always recommended to consult an authorized Rolex service center or a reputable watchmaker. They have the expertise and tools to handle Rolex watches properly. Attempting to disassemble or repair the Oyster bracelet yourself, especially if you lack experience, can potentially damage it or the watch case. If you're considering replacing your Oyster bracelet or switching to a different type of band, professional installation is advisable to ensure proper fitment and avoid damaging the watch.

Genuine Rolex Oyster bracelets and bands are meticulously crafted and bear specific markings and hallmarks. While counterfeiters are becoming increasingly sophisticated, there are still telltale signs to look for:

• Quality of Materials and Finish: Genuine Rolex bands are made from high-quality materials (904L steel, premium leather, etc.) and have a flawless finish. Counterfeit bands often use inferior materials and may exhibit imperfections in finishing.
• Rolex Markings and Engravings: Genuine Rolex bands will have precise and clear Rolex markings, including the Rolex crown logo, reference numbers, and steel markings (e.g., "STEELINOX"). Check for crispness and accuracy of engravings.
• Clasp Construction and Functionality: Rolex clasps are robust and operate smoothly and securely. Examine the clasp mechanism and ensure it feels solid and well-constructed.
• End Links and Fitment: Genuine Rolex bands are designed for precise fitment to specific Rolex models. End links should fit flush and seamlessly against the watch case.
• Source Reputability: Purchase Rolex bands from authorized Rolex dealers, reputable watch retailers, or trusted online marketplaces with strong seller ratings and return policies. Be wary of deals that seem too good to be true.

While the aftermarket offers a wider variety of band styles and price points, there are risks associated with non-genuine Rolex bands:

• Quality and Durability Concerns: Aftermarket bands may not meet the same quality standards as genuine Rolex bands in terms of materials, construction, and durability.
• Fitment Issues: Poorly made aftermarket bands may not fit the Explorer II case correctly, potentially leading to scratches, damage, or insecure attachment.
• Aesthetic Discrepancies: Aftermarket bands may not perfectly match the aesthetic and design language of the Rolex Explorer II, potentially detracting from the watch's overall appearance.
• Potential Impact on Resale Value: Using non-genuine Rolex parts may negatively impact the resale value of your watch in the long run, especially for collectors.

If you choose to explore aftermarket bands, prioritize reputable brands known for producing high-quality watch straps designed for Rolex models. Read reviews, check seller ratings, and ensure a good return policy before purchasing. For maintaining the highest level of authenticity and value, sticking with genuine Rolex bands is generally recommended.