The Omega Speedmaster Professional. The name conjures images of lunar landings, daring adventures, and a timeless design that has captivated watch enthusiasts for decades. A key element contributing to its legendary status and distinct character is its crystal: Hesalite. While many modern watches utilize sapphire crystals for their superior scratch resistance, the Speedmaster Professional's steadfast commitment to Hesalite is a testament to its unique appeal and enduring legacy. This article will delve deep into the world of the Omega Speedmaster Professional with Hesalite crystal, exploring its history, the properties of Hesalite itself, the reasons behind Omega's continued use, and the practical considerations for owners.
Understanding Hesalite: More Than Just Plastic
Omega uses the term "Hesalite" to describe the crystal material in its Speedmaster Professional watches. However, Hesalite is simply a brand name for Polymethyl Methacrylate (PMMA), a transparent thermoplastic. While often referred to as "plastic," this is a simplification. PMMA is a complex polymer with specific optical and mechanical properties that make it surprisingly well-suited for use in a watch crystal, particularly in the context of the Speedmaster's history and intended purpose.
Several manufacturers produce PMMA, and slight variations in optical clarity, durability, and other characteristics can exist between batches and suppliers. Omega carefully selects its PMMA supplier to ensure consistency and adherence to its exacting standards. This is crucial, as even minor differences can affect the crystal's performance and longevity. The specific properties of Omega's Hesalite are closely guarded, contributing to the mystique surrounding the material.
The Advantages of Hesalite:
Despite its perceived inferiority to sapphire in terms of scratch resistance, Hesalite offers several advantages that have cemented its place in the Speedmaster Professional's design:
* Lower Breakage Risk: While more prone to scratching, Hesalite is significantly less prone to shattering upon impact than sapphire. This is a crucial safety feature, especially in the high-stress environments where the Speedmaster might find itself. A shattered sapphire crystal could result in serious injury, whereas a cracked Hesalite crystal would likely remain intact, albeit scratched.
* Unique Visual Character: Hesalite possesses a subtly warmer, more vintage aesthetic than sapphire. The slight yellowing that can occur over time adds to the watch's character and patina, giving it a distinct vintage feel even when new. This characteristic is highly valued by many collectors. Sapphire, on the other hand, tends to maintain a consistently clear and modern appearance.
* Easier and Cheaper Repair: Replacing a scratched or cracked Hesalite crystal is significantly cheaper and easier than replacing a sapphire crystal. This is a key factor for owners who may be concerned about the potential for damage during everyday wear. The lower replacement cost of Hesalite makes it a more accessible option for maintaining the watch in optimal condition. This is further discussed in the section on Omega Speedmaster Hesalite replacement cost.
* Historical Significance: The use of Hesalite in the Speedmaster Professional is intrinsically linked to its history and legendary status. The watches worn on the moon during the Apollo missions featured Hesalite crystals, solidifying its place in space exploration history. This historical connection is a significant factor in the continued use of Hesalite in the modern Speedmaster Professional.
The Disadvantages of Hesalite:
While Hesalite has its advantages, it's crucial to acknowledge its drawbacks:
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