Mauron Musy Black Steel Armure Automatic // MU 01-101

The Black Steel Armure by Mauron Musy is distinguished by a rugged and restrained design that's forged in steel. The case alone uses 36 different components, with meticulously handcrafted finishing. Simple, monochromatic and extremely readable, the Armure is equipped with a self-winding Calibre 39 with a generous 65-hour power reserve, beating at a frequency of 4Hz and featuring a Swiss lever escapement. Sleek and slim - which architecture modeled after a scarab beetle - this timepiece is still robust and imposing, embodying the transcendent power of raw and revolutionary waterproofness.

Unlike every other waterproof watch on the market, that achieves its water resistance with synthetic gasket rings that must be regularly replaced, Maron Musy watches are the only watches in the world to be sealed with nO-Ring® Technology. This proprietary system seals the watch directly, keeping water out up to 100M down, with no gaskets, no repairs, and no bulky screw-lock crown.

Eliminating the sealing rings requires ultra-high-precision mechanics. To achieve this, satellite springs are placed around the perimeter of the glass and of the caseback, enabling uniform clamping while avoiding any risk of deforming or damaging the flat surfaces, as well as compensating for any potential dilating of components due to temperature variations. The caseband and bezel apply pressure to these satellite springs, creating uniform vertical compression of all elements so as to guarantee perfect, stable, and lasting watertightness.