MB&F HM9 Flow Road Hydrodynamic Watch

October 28, 2019
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MBF HM9 Flow Road Hydrodynamic Watch

MBF HM9 Flow Road Hydrodynamic Watch Overview

Independent watchmaker MB&F introduced the HM9 Flow Road Hydrodynamic Watch at SIHH 2019. Drawing inspiration from the aerodynamic designs of 1940s and 1950s automobiles, the HM9 Flow integrates timekeeping into a cockpit-like case, combining futuristic engineering with vintage aesthetics. The watch leaves a lasting impression with its bold, streamlined silhouette and technical sophistication.

MBF HM9 Flow Road Hydrodynamic Watch dial view

Case Design and Aerodynamics

Measuring 57 mm in length, the titanium case of the MBF HM9 Flow Road Hydrodynamic Watch features both satin and mirror-polished surfaces. Despite its substantial size, the ultra-light titanium construction ensures comfortable wear. The design adheres strictly to aerodynamic principles, and each component, including water-resistant gaskets, is custom-made due to the irregular case geometry. Achieving the final finish is a painstaking process, making the case a remarkable feat of craftsmanship.

MBF HM9 Flow Road Hydrodynamic Watch titanium case

Movement and Technical Innovation

The watch consists of three sections: the central cockpit and two lateral power pods. Beneath the sapphire crystal of the cockpit sits a planetary differential connecting two balance wheels located in the power pods. The convex sapphire glass provides a magnified view of the movement, highlighting the mirror-polished stainless-steel bridges against the titanium case. The hours and minutes display, inspired by vintage automobile speedometers, sits at 6 o’clock for optimal readability.

MBF HM9 Flow Road Hydrodynamic Watch movement

The hand-wound movement operates at 18,000 vph, offers a 45-hour power reserve, and is composed of 301 components. The mainplate is crafted from rose gold, and the caliber is among the most complex in MB&F’s HM series, taking three years to develop.

Strap and Limited Edition Details

Limited to 33 pieces, the MBF HM9 Flow Road Hydrodynamic Watch features a brown calfskin strap and titanium folding clasp, water-resistant to 30 meters. Its unique design and engineering make it a collector’s item for enthusiasts of horology and automotive-inspired watches.

MBF HM9 Flow Road Hydrodynamic Watch strap and clasp

Specifications

Titanium case, 57 mm × 47 mm × 23 mm, sapphire crystal, speedometer-style dial, manual-winding movement, 44 jewels, 18,000 vph, 45-hour power reserve, brown calfskin strap, titanium folding clasp, water-resistant to 30 meters.

For official details, visit MB&F Official Website.

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Fidel is the founder and editor-in-chief of Luxury Wrist Club. With over a decade of experience in haute horlogerie and fine jewelry, he specializes in technical watchmaking, gemstone appraisal, and luxury market trends. His work has been featured in leading industry publications, and he is a regular speaker at international watch and jewelry summits.

Based in Europe, Fidel combines deep technical knowledge with a collector's eye for detail. He believes that true luxury is not just about possession — it's about understanding the craftsmanship, heritage, and artistry behind every masterpiece.

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