Wearables

HM9 Sapphire Vision watch puts intricate movement in full view

HM9 Sapphire Vision watch puts...
The MB&F HM9 Sapphire Vision uses a sapphire case to show off its movement
The MB&F HM9 Sapphire Vision uses a sapphire case to show off its movement
View 7 Images
The MB&F HM9 Sapphire Vision in four editions
1/7
The MB&F HM9 Sapphire Vision in four editions
The MB&F HM9 Sapphire Vision black edition
2/7
The MB&F HM9 Sapphire Vision black edition
The MB&F HM9 Sapphire Vision blue edition
3/7
The MB&F HM9 Sapphire Vision blue edition
The MB&F HM9 Sapphire Vision blue edition
4/7
The MB&F HM9 Sapphire Vision blue edition
The MB&F HM9 Sapphire Vision purple edition
5/7
The MB&F HM9 Sapphire Vision purple edition
The MB&F HM9 Sapphire Vision uses a sapphire case to show off its movement
6/7
The MB&F HM9 Sapphire Vision uses a sapphire case to show off its movement
The MB&F HM9 Sapphire Vision in red gold
7/7
The MB&F HM9 Sapphire Vision in red gold
View gallery - 7 images

High-end watchmaker MB&F has released a limited edition of its Horological Machine No. 9 (HM9) wristwatch called the "Sapphire Vision, which sets the movement inside a specially engineered, transparent, three-dimensional sapphire and precious metal case to show off the works.

In 2018 MB&F added the HM9 Flow watch to its spectacularly outrageous portfolio. The HM9 boasted a case intended to echo the lines of the classic cars and aircraft of the 1940s and '50s. It was a nice bit of whimsy, but the company wasn't satisfied because the titanium case hid the mechanics, which MB&F founder Maximilian Büsser described as "the most beautiful movement we’ve created to date."

To correct that apparent shortcoming, MB&F has come up with the Sapphire Vision, which, as the name implies, replaces the titanium case with one sculpted out of sapphire. Such cases have been made before, but these tend to be rather boxy affairs because, though extremely hard, sapphire fractures when put under pressure where metal will deform.

The MB&F HM9 Sapphire Vision in four editions
The MB&F HM9 Sapphire Vision in four editions

To get around this problem and to recreate the shape of the HM9 Flow, MB&F had to make some slight redesigns to reduce the pressure on the case and treat the sapphire crystals, putting in about 350 hours of careful machining and polishing in the process. A patented 3D rubber gasket joins the case around the movement and the three sapphire pieces were fused to the metal frame using a vacuum and high temperature process then sealed with a special bonding compound. The result is a 52-component case water resistant to 3 ATM (30 m, 100 ft).

But the case isn't made to be seen so much as to be seen through. It's main purpose is to show off the 52-jewel, 301 component, manual-wound movement that uses a single-barrel 45-hour power reserve to run two independent balance wheels beating at 2.5 Hz (18,000 bph). This may seem slow in a precision caliber, but the two balances are averaged by planetary differentials to produce a more accurate readout on the vertical dial display, while cancelling any resonance that might develop.

In addition, there are dual spherical turbines under the movement and shock-absorbing helicoidal springs between the movement and the case. To produce these, MB&F used lasers to cut the springs out of solid tubes of stainless steel for better elasticity and limited lateral displacement.

The HM9 Sapphire Vision will put you back a tidy US$440,000 and comes in four limited editions of five units each. Two editions come in a 18K red gold frame with a NAC-coated black or a PVD-coated blue engine, the other two editions in 18K white gold frame with a PVD-coated purple or a red gold-plated engine. Both come with a brown or black alligator strap with a matching red or white gold folding buckle.

The video below introduces the HM9 Sapphire Vision.

Sapphire Vision

Source: MB&F

View gallery - 7 images
7 comments
Harap White
Haha 🤣 it looks like a small version of a male body part
riczero-b
Staggeringly pointless.
ChairmanLMAO
That'll send the steampunks mooning!!
clay
It's incredible. Drink in that mechanized visual tour-de-force. And that sapphire case is *amazing*.
God, I wonder what that took to extrude from the Mind's Eye unto reality?

Just because.
Douglas Bennett Rogers
I want to see a nuclear powered watch.
Nelson Hyde Chick
So much better uses for that kind of money. Only someone with much more money than sense would buy this abomination.
Zerozen
@riczero-b can't it be pointless if life is not pointless.