DB25 Moon-Phase Starry Sky Technical Details

Name: DB25 Moon Phase Starry Sky
Reference: DB25LWS3V2

Functions: Hours, Minutes, Spherical moon phase indication at 12 o’clock, Power reserve situated on the back

Technical features of calibre DB2105

Number of parts: 286
Jewelling: 29 jewels
Diameter: 30 mm
Power reserve: 6 days, ensured by a self-regulating twin barrel
De Bethune Innovation (2004)

Specificities: Silicon annular balance encircled by a white gold ring 
De Bethune Patent (2010)

"De Bethune" balance-spring with flat terminal curve
De Bethune Patent (2006)

Silicon escape wheel

Spherical moon phase indication accurate to a degree of one lunar day every 122 years – De Bethune Patent (2004)

Triple pare-chute shock-absorbing system
De Bethune Patent (2005)

Frequency: 28,800 vibrations per hour
Adornment: Plate and barrel bridge cover in mirror-polished steel
Hand snailed barrels
Hand-polished, chamfered steel parts

Dial: Blued and polished titanium with hand-fitted white gold pins depicting the stars
Polished white gold hours markers

Hands: Hand-polished stainless steel curved hands

Display: Spherical moon phase indicator in palladium and flame-blued steel with precision of one lunar day every 122 years at 12 o’clock – De Bethune Patent (2004)
Power reserve indicator on the back

Case and strap:
Case material: white gold 
Case diameter: 44mm
Case thickness: 11,20 mm
Lugs: integral hollowed lugs
Crystal: Sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment
Case back: open back in polished white gold and linear power reserve
sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment

Strap: Extra-supple alligator skin, lining in calf

Buckle: Pin buckle