Movement:
- Mechanical automatic JLC calibre 912, crafted, assembled and decorated by hand.
- 28,800 vph.
- 45-hour power reserve
- 315 parts
- 28 jewels
- 7.8mm thick
- heavy metal oscillating weight.
Functions:
- Hour, minute
- seconds
- date
- world time: city disc combined with a 24-hour flange
- alarm with double hour and minute display.
Master Compressor W-Alarm '46'
- black
- alarm indication and date: grey, white transferred numerals.
- luminescent numerals and hour-markers
- 24-hour ring: two-tone yellow/white, or gold-coloured/white.
- Titanium model: yellow transferred luminescent 46 number in dial centre.
Hands:
- local hour and minute hands trapeze-shaped gold-plated or rhodium-plated brass openworked, luminescent
- others: gold-plated or rhodium-plated brass.
Crowns:
- 1 crown at 2 o'clock for the alarm function and rapid date correction in the other direction (counter clockwise)
- 1 crown at 4 o'clock to start the watch, time adjustment, crown equipped with a compression key
- 1 crown at 10 o'clock to display world time, in red or black anodised aluminium.
- 1 double-sided pushpiece at 10 o'clock to start/stop the alarm.
Case diameter:
- 46.3mm.
- Satin-brushed grade 5 titanium, polished steel support
- shock-absorbing system
- cambered sapphire crystal, hardness No. 9
- interchangeable strap change system integrated within the case middle
- water-resistant to 100M
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