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A. Lange & Sohne

A. Lange & Sohne 1815 Rattrapante Perpetual Calendar 41.9mm 421.025

A. Lange & Sohne 1815 Rattrapante Perpetual Calendar 41.9mm 421.025

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Condition New/Unworn
Case Shape Round
Case Dimensions 41.9mm
Case Material Platinum
Dial Color Silver
Crystal Scratch Resistant Sapphire
Screw-in Crown No
Water Resistance
No rating Does not allow contact with water
30m/99ft - 50m/165ft Allows for contact with water such as washing hands and rain
50m/165ft - 100m/330ft Allows for light poolside swimming
100m/330ft - 200m/660ft Allows for swimming, snorkeling and showering (do not expose to hot water)
200m/660ft - 500m/1650ft Allows for impact water sports such as board diving and scuba diving
500m/1650ft + Appropriate for serious deep water diving.

Learn more about Water Resistance.

Close
30m/100ft
Case Back Transparent
Band Material Alligator/Crocodile Leather
Color/Finish Black
Clasp Deployant Buckle
Lug Width 14.7mm
Movement Manual Wind
Complications Perpetual Calendar, Split Second Chronograph aka Rattrapante, Moonphase, Power Reserve Indicator
  • Polished finished platinum case with fine satin finished case band (edge)
  • Flat silver main dial with slightly recessed sub-dials finished with a very fine concentric circle pattern texture.
  • Black painted Arabic Numeral hour markers.
  • Fine black printed minute/seconds & fractions of a second track.
  • Hands are a combnation of polished rhodium plated & blued steel.
  • Small seconds sub-dial located at the 6 o'clock position.
  • Perpetual Calendar features:
    • Day of the week at the center of the 9 o'clock sub-dial.
    • Date of the month indicated on the perimeter of the 9 o'clock sub-dial.
    • Month indicated on the perimeter of the 3 o'clock sub-dial.
    • Leap year indicator  at the center of the 3 o'clock sub-dial. During a leap year the watch will accurately account for the shorter (28 days) February month.
    • Moonphase window displayed at the center of the seconds sub-dial at the 6 o'clock position.
  • Rattrapante/Split Seconds Chronograph/Stopwatch:
    • "Split-Seconds" or "Rattrapante" function has 2 seconds hand counters that run in unison - when the Rattrapante button (located on the case edge at the 10 o'clock position) is pressed the top seconds hand (in this case the blued steel hand) stops, but an additional seconds hand hidden directly beneath the top hand (in this case a polished rose gold hand) will continue to run allowing for an addition timing function.
    • Polished blued steel central seconds counter with red tip.
    • Polished rhodium plated Rattrapante seconds hand directly beneath.
    • 30 minute counter indicated on the perimeter of the 12 o'clock sub-dial.
  • Power Reserve Indicator:
    • AUF/AB (Up/Down) power reserve indicator located at the center of the 12 o'clock sub-dial with a polished rhodium plated hand.
  • A. Lange & Sohne Caliber L101.1, beats at 21,600 vph, composed out of 631 parts, contains 43 Jewels & has an approximate power reserve of 42 hours.
  • Movement bridges & plates are finely finished with striped/ribbed finish and polished beveled edges. The balance-cock is hand engraved making each watch unique.

Alternate model # 421025

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