Tourbillon Perpetual Calendar - A. Lange & Söhne
LANGE 1
A. Lange & Söhne
Watch characteristics
Case
41.90mm
Platinum
Movement
Self-winding mechanical
Power reserve: 50H
Frequency: 21600 Alt/H
Bracelet/Strap
Leather
Folding buckle
Functions and complications
Date
Day/Night indicator
Hours
Minutes
Month
Moonphase
Perpetual calendar
Seconds
Tourbillon
Year