
Sharon Chan
International Director
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Sold for HK$766,000 inc. premium
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International Director

Specialist

Senior Business Associate
The MB&F HM4 Thunderbolt is a remarkable timepiece that pushes the boundaries of horological design and engineering. The timepiece draws inspiration from aviation, particularly the Fairchild Republic A-10 Thunderbolt aircraft. Its design features two jet engine-shaped pods that house the dials, giving it a futuristic and dynamic look. The watch is crafted from high-grade titanium and sapphire crystal, ensuring durability and a lightweight feel. The watch took three years to develop and consists of over 300 components. It features horizontally configured dual mainspring barrels that drive two vertical gear trains. The right pod displays hours and minutes, while the left pod shows the power reserve. The dials are mounted perpendicular to the wrist, making them easily readable. The watch is manually wound, with two crowns for winding and setting the time. The current example is in very good condition and includes its full suite of accessories. Beyond just a timepiece, the HM4 Thunderbolt is a piece of art that showcases MB&F's innovative approach to watchmaking.