Calibre BVL 312 Teknik SpesifikasyonlarıDescription: BVL 312, mechanical self-winding chronograph caliber
Diameter: 13 ¼ lignes
Dimensions: Casing diameter: 30.00mm – Total thickness: 8.33mm
Jewelling: 27 jewels
Power Reserve: 48 hours
Frequency: 4 Hz – 28,800 vibrations/hour
Winding: Via a unidirectional oscillating weight mounted on ball bearings
Balance: Glucydur – 3 spokes
Adjustment: Omegametric for chronometer-worthy precision
Bridges: Barrel & gear train: all of a piece (3/4 bridge)
Mainplate & bridges: Brass
Oscillating weight: Monometallic, in tungsten
Mainplate: Circular-grained
¾ bridge: Circular-grained
Automatic bridge: Circular Cotes de Geneve
Chronograph bridge: Circular-grained
Bridge: Hand-polished beveling
Bridge chamfers: Sunburst decoration
Oscillating weight: Dedicated Sotirio Bulgari cut-out; snailed decoration
Column wheel: Black PVD coating
Jewel surround: Diamond-polished, tone-on-tone
Finishing of the visible: Hand-drawn file strokes, beveled and polished rims steel chronograph parts
Engravings: Matte black-lacquered engraving backgrounds
Rating precision: C.O.S.C with rating certificate