De Bethune · Movement
De Bethune caliber DB2509
Ref. DB2509
Self-regulating twin barrel Silicon/white gold balance wheel – balance-spring with flat end curve De Bethune 30” silicon/titanium tourbillon, 36,000 vph Central jumping seconds Silicon escape wheel Spherical moon-phase indication accurate to a degree of one lunar day every 122 years Retrograde age of the moon indication
- Type
- Handwound
- Display
- Analog
- Power reserve
- 96 h
- Frequency
- 36000 vph
- Jewels
- 48
- Complications
- Date, Day, Hours, Jumping Seconds, Leap Year, Minutes, Month, Moonphase, Perpetual Calendar, Power Reserve Indicator, Tourbillon Escapement
