MB&F - HM9 ‘Sapphire Vision’, new 2023 Limited Editions

MB&F unveiled two new HM9 Sapphire Vision’models in sapphire crystal in yellow gold/green and white gold/blue case/movement combos. Price CHF 420,000

Following the inaugural Horological Machine N°9 – nicknamed HM9 ‘Flow’ – presented in 2018 and the four HM9 ‘Sapphire Vision’ limited editions launched in 2021, MB&F is unveiling two new HM9 ‘Sapphire Vision’ models in sapphire crystal. 

These models are again limited to only five pieces each: one in an 18K yellow gold frame with green-PVD (Physical Vapor Deposition) movement, and the other in an 18K white gold frame with blue-PVD movement.

Paying tribute to the automotive and aeronautic designs of the 1940s and 1950s, the HM9 is built around an engine that MB&F founder Maximilian Büsser described as 'the most beautiful movement we’ve created to date.'

Comprising 301 components and 52 jewels, the HM9 engine is revealed in all its amazing detail thanks to an outer hull of transparent sapphire crystal and precious metal. It is precisely fitted together in three parts and sealed with a proprietary combination of a patented three-dimensional gasket and a high-tech compound bonding process that makes it possible to guarantee water resistance up to a pressure of 3 ATM (approximately 30 meters / 100 feet).

Two independent balances, slowly beating at the frequency of 2.5 Hz (18,000 vibrations per hour), provide two sets of chronometric data that can be translated by a differential to produce a singe stable averaged reading. 

Conical gears turn the engine’s energy and information current through a 90° angle to feed the time display on a sapphire crystal dial, marked with Super-LumiNova for enhanced legibility in poor light environments.

On the reverse, co-axial beneath each of the balances, we find two turbines that spin freely, adding a playful element to the exploration of this micro-world. A single barrel delivers an autonomy of 45 hours when fully wound.

Measuring 57 mm x 47 mm x 23 mm, the watch is secured to the wrist by a hand-stitched brown or black alligator strap with red or white gold folding buckle that matches the case. 

The retail price of the new MB&F HM9-SV editions is CHF 420,000, excluding local sales tax. mbandf.com