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Why The Hamilton Pilot Pioneer Mechanical Is Your Next Watch [Updated 2025]
First we saw the Khaki Field Mechanical now it's time for it's smaller cousin...
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There are over 4 billion years of history on your wrist with this dial made of an extraterrestrial rock called Muonionalusta. This meteorite blasted into the Earth atmosphere some four ice ages ago into an area north of the Arctic circle. To make the dial, special machining and treatment is required to reveal the distinctive characteristic of this iron meteorite. The beautiful equilateral triangles that create the Widmanstätten pattern is a result of very slow cooling over millions of years, whereas the crystalline structure of the minerals within the core of the asteroid changes. Since the textures are organic and cannot be artificially reproduced, each single dial is a completely unique piece. Limited to just 88 pieces, this watch features a highly precise COSC-certified Swiss Automatic movement. It comes with the same tested and proven patented features as the popular Essence lineup, such as the Case Suspension System and a folding clasp made of carbon fiber, with a unique fine-adjustment system that perfectly adapts to the wrist’s ever changing size due to heat and humidity.
Movement
The Essence ThirtyNine is powered by Sellita's highest quality grade SW200-1 Swiss Made Automatic movement, beautifully decorated and wound by Formex's custom skeletonized rotor. Each one of these movements is certified by the COSC and undergoes the meticulous 15-day rate test to ensure extraordinary levels of mechanical accuracy and precision.
Dial
After being cut and treated, the final product is a perfectly flat disc that measures just 0.65mm thick and perfectly showcases the natural pattern of the meteorite. Since the textures are organic and cannot be artificially reproduced, each individual dial will appear slightly different, making every single watch a completely unique piece. Applied indices, deep-filled with Super-LumiNova® BGW9 and mirror-polished bevels provide legibility day and night.
Straps and Clasps
For a perfect fit and more comfort on the wrist at all times, we're using the new Formex Deployant clasp with a gradual fine-adjustment system for the leather and rubber straps. The stainless steel bracelet, which reflects the same flawless finishing of the Essence's case, has a hidden Micro-Extension. All straps and the steel bracelet can be changed without the use of any tools and in just a few seconds.
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