Double Tourbillon 30° White Gold Technique Special. Movement: GFS caliber, hand-wound mechanical movement, 120-hour power reserve. Functions: hours, minutes, seconds, power reserve indicator. Case: white gold. Size: 47.5 mm. Water resistance: 50 m. Strap: crocodile leather. Features: double tourbillon, outer carriage rotates in 4 minutes, inner carriage tilted at an angle of 30° and rotates in 60 seconds, limited edition.