A. Lange & Sohne Datograph Perpetual

The DATOGRAPH PERPETUAL is the first wristwatch for which Lange combined a chronograph with a perpetual calendar. The model version in white gold features a grey dial crafted from solid silver.
Case dimension
Case diameter: 41 mm
Case thickness: 13.5 mm
Winding mechanism
Manually wound movement
Power reserve
36 hours
Complications
Outsize date, Calendar function, Moon-phase display, Chronograph, Day/night indicator, Day-of-week display
Reference
410.038 E / LSLS4103AB
Dial colour
Light-grey
Case material
18-carat white gold
Case back: sapphire glass
Case dimension
Case diameter: 41 mm
Case thickness: 13.5 mm
Water resistance
3 bar
Movement designation
L952.1
Number of movement parts
556
Winding mechanism
Manually wound movement
Power reserve
36 hours
Balance frequency
18,000 semi-oscillations per hour (2.5 Hz)
Complications
Outsize date, Calendar function, Moon-phase display, Chronograph, Day/night indicator, Day-of-week display
Leather Strap
Black, 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