HM9 'Sapphire Vision' White Gold

BHD 193,000.000
by MB&F


First presented in 2018, Horological Machine N°9 – nicknamed HM9 ‘Flow’ – was inspired by the dynamic profiles of automotive and aviation design from the 1940s and 50s. The result was a case like no other that echoed the epoch’s flowing, aerodynamic lines.

Despite its striking external appearance, the HM9 movement inside was described as the most beautiful movement MB&F had created to date. What other logical step was there to take, if not to encase the engine in a transparent sapphire crystal shell?

The result is Horological Machine N°9 ‘Sapphire Vision’ or "HM9-SV": after four initial editions in 2021, two new sapphire crystal editions are presented in 2023: in white gold combined with a blue PVD-coated engine, or yellow gold featuring a PVD-coated green engine - both limited to just 5 pieces.

Why we love it

Experience the allure of innovation and exploration with the HM9 'Sapphire Vision'. Its sapphire crystal exterior harmoniously melds with precious metals, encapsulating a world of intricate mechanics and aesthetics. With independent balances, conical gears, and a 90° energy transformation, it presents time as a coherent pulse on a luminous sapphire dial. Twin turbines beneath the balances beckon exploration, symbolizing the uncharted oceanic depths. HM9-SV: a journey into the extraordinary, where technology and wonder collide.

Technical Specifications


Manual-winding in-house movement.

Two fully independent balance wheels with planetary differential.

Frequency: 2.5Hz (18,000bph).

301 components, 52 jewels.

Dual spherical propellers under the movement.

Shock-absorbing helicoidal springs linking the movement to the case.


Sapphire crystal case with frame in 18K white or yellow gold.

Unique assembly process of the sapphire crystal case parts with a combination of patented three-dimensional gasket and high-tech bonding compound.

Water resistance: 30 m / 90 ft / 3 ATM.


Manual winding with single mainspring barrel.

45 hours.


57mm x 47mm x 23mm


Each edition limited to only five pieces:

- 18K white gold frame, featuring a PVD-coated blue engine;

- 18K yellow gold frame, with PVD-coated green engine


Total of five sapphire crystals treated with anti-reflective coating: three crystals for the main components of the case, one crystal covering the dial, and one crystal for the dial itself.


Hand-stitched brown or black alligator strap with white or yellow gold folding buckle matching the case.


Hours and minutes displayed on vertical sapphire crystal dial with anti-reflective treatment and Super-LumiNova on the numbers and indexes.