Pendulum rod made of Invar, a metal alloy with a very low thermal expansion coefficient, with compensation tube for temperature variation.

Stainless steel arbor, revolution on 15 ball bearings.

24K gold-plated gears and pinions.

Crystal glass structure, 1/2”-thick discs.

Charge autonomy: 7+1 days / Charge reserve: up to 5 minutes 

Suspension spring.