A. Lange & Sohne Datograph Perpetual Tourbillon

The DATOGRAPH PERPETUAL TOURBILLON unites three significant complications: a flyback chronograph, a perpetual calendar and a tourbillon with a patented stop-seconds mechanism. The white-gold model has a dial made of solid pink gold. Limited to 100 pieces, this model is available exclusively in Lange boutiques.
Case dimension
Case diameter: 41.5 mm
Case thickness: 14.6 mm
Winding mechanism
Manually wound movement
Power reserve
50 hours
Complications
Outsize date, Calendar function, Moon-phase display, Tourbillon, Chronograph, Day/night indicator, Power-reserve indicator, Day-of-week display
Reference
740.056FE / LSLS7403AT
Limited
100 pieces
Dial colour
18-carat pink gold
Case material
18-carat white gold
Case back: sapphire glass
Case dimension
Case diameter: 41.5 mm
Case thickness: 14.6 mm
Water resistance
3 bar
Movement designation
L952.2
Number of movement parts
729
Winding mechanism
Manually wound movement
Power reserve
50 hours
Balance frequency
18,000 semi-oscillations per hour (2.5 Hz)
Complications
Outsize date, Calendar function, Moon-phase display, Tourbillon, Chronograph, Day/night indicator, Power-reserve indicator, Day-of-week display
Leather Strap
Brown, Alligator leather
Our alligator straps fully comply with the CITES regulations: Species – alligator mississippiensis. Extraction method – farmed. CITES Appendix – Appendix II
Deployant buckle
18-carat white gold
Distance between lugs
20 mm