De Bethune Tourbillon Regulator Technical description
Functions:
Hours & minutes
Central jumping seconds
Movement operating indicator at 12 o'clock
Seconds indicator 30 ''
MovementDB2109 – mechanical hand-wound
Mainplate hand-decorated and snailed, hand-chamfered and polished steel parts, De Bethune stripes
Natural fired-blue titanium bridge Self-regulating twin barrel* Thermocompensated silicon/platinum balance wheel* Balance-spring with flat terminal curve* Ultra-light 0.18 gram silicon/titanium tourbillon carriage*
Jewelling: 45 jewels
Frequency: 36,000 vibrations per hour
Power reserve: 100 hours
Shaped case 44.6 mm in diameter in white or rose gold
Thickness: 10.8 mm
Glass: sapphire crystal with double glareproofing, 1800 Vickers
Crown: screw-locked at 12 o'clock – adjustable in two positions
Dial: De Bethune star-studded sky in blued steel with gold stars – Sterling silver hours and minutes ring
Hands: hand-polished steel
Open back revealing the 30-second rotating silicon/titanium tourbillon with jumping seconds
Strap: extra-supple alligator leather with pin buckle