The DB25L White Gold has 305 parts with 29 jewels. The diameter of the caliber is 30mm. Power reserve of 6 days, ensured by a self-regulating twin barrel. Specificities include a silicon and platinum balance wheel, De Bethune balance-spring with flat terminal curve, a silicon escape wheel, spherical moon-phase indication that is accurate to a degree of one lunar day every 122 years, and a triple pare-chute shock-absorbing system. Frequency is 28,800 vibrations per hour. Adornment features silver plate and barrel bridge cover decorated with "De Bethune stripes", hand snailed barrels, and hand polished chamfered steel parts.
Hands are curved in hand-polished and flame-blued steel. Spherical moon-phase indication in palladium and flamed-blued steel with an accuracy of one lunar day every 122 years at 12 o-clock. The dial has a silver hand-guillouché, with 12 radiating sectors. De Bethune star-studded sky is in blued mirror-polished steel, inlaid with rose gold stars. Silver curved hour and moon-phase rings with black relief Roman numerals.
The case material is in white gold with a diameter of 44mm and thickness of 11.2mm. The lugs are integrated and hollowed. The crystal is in hard-mineral (hardness of 1800 Vickers) with double anti-reflective coating. Water-resistant to 30 meters. The strap is extra-supple alligator skin with lining in alligator. The pin buckle is in white gold.