Model
Case:
Case Material
Platinum
Case Glass
Sapphire
Case Back
Open
Case Diameter
41.90 mm
Case Height
12.20 mm
Case Lug Width
22.00 mm
Dial:
Dial Color
Rhodium
Dial Indexes
Mixed
Dial Hands
Alpha
Movement:
Automatic movement with tourbillon escapement and perpetual calendar. Total of 624 parts including 76 jewels and 5 screwed gold chatons.
Type
Automatic
Brand
A. Lange & Söhne
Caliber
L082.1
Display
Analog
Diameter
34.10 mm
Jewels
76
Reserve
50 h
Frequency
21600 bph
Time
Additional 24 Hour Hand (adjustable), Hours, Minutes, Small Seconds
Date
Date, Day, Leap Year, Month, Perpetual Calendar
Astronomical
Moonphase
Additionals
Tourbillon Escapement
Price: $ 289
The Lange 1 Tourbillon Perpetual Calendar was introduced in 2014. Similar to the Daymatic, it features a mirrored dial layout and automatic winding. Compared to said model it however adds the perpetual calendar, moonphase and tourbillon escapement - the latter only visible through the sapphire crystal caseback.

Ref. 720.025 is a platinum case and is a limited edition of 100 pieces.
  • A. Lange & Sohne Lange 1 Tourbillon Perpetual Calendar Platinum (720.025) Watch Replica