A. Lange & Sohne 1815 Rattrapante Perpetual Calendar

The 1815 RATTRAPANTE PERPETUAL CALENDAR unites two refined classic complications in a wristwatch: a chronograph-rattrapante and a perpetual calendar with a moon-phase display. The model version in platinum features an argente-coloured dial crafted from solid silver.
Case dimension
Case diameter: 41.9 mm
Case thickness: 14.7 mm
Winding mechanism
Manually wound movement
Power reserve
42 hours
Complications
Calendar function, Moon-phase display, Chronograph, Day-of-week display, Power-reserve indicator
Reference
421.025FE / LSLS4212AB
Dial colour
Argente
Case material
950 platinum
Case back: sapphire glass
Case dimension
Case diameter: 41.9 mm
Case thickness: 14.7 mm
Water resistance
3 bar
Movement designation
L101.1
Number of movement parts
631
Winding mechanism
Manually wound movement
Power reserve
42 hours
Balance frequency
21,600 semi-oscillations per hour (3.0 Hz)
Complications
Calendar function, Moon-phase display, Chronograph, Day-of-week display, Power-reserve indicator
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
950 platinum
Distance between lugs
20 mm