A. Lange & Sohne Langematik Perpetual

When the LANGEMATIK PERPETUAL was launched in 2001, it was the first mechanical wristwatch that combined a perpetual calendar with a Lange outsize date. The white-gold model has a blue dial made of solid silver. Limited to 50 pieces, this model is available exclusively in Lange boutiques.
Case dimension
Case diameter: 38.5 mm
Case thickness: 10.2 mm
Winding mechanism
Self-winding movement
Power reserve
46 hours
Complications
Outsize date, Calendar function, Moon-phase display, Day/night indicator, zero reset, Day-of-week display
Reference
310.028 E / LSLS3103AG
Limited
50 pieces
Dial colour
Blue
Case material
18-carat white gold
Case back: sapphire glass
Case dimension
Case diameter: 38.5 mm
Case thickness: 10.2 mm
Water resistance
3 bar
Movement designation
L922.1
Number of movement parts
478
Winding mechanism
Self-winding movement
Power reserve
46 hours
Balance frequency
21,600 semi-oscillations per hour (3.0 Hz)
Complications
Outsize date, Calendar function, Moon-phase display, Day/night indicator, zero reset, Day-of-week display
Leather Strap
Dark Blue, Alligator leather
Our alligator straps fully comply with the CITES regulations: Species – alligator mississippiensis. Extraction method – farmed. CITES Appendix – Appendix II
Prong buckle
18-carat white gold