A. LANGE & SOHNE LANGE 1 TOURBILLON PERPETUAL CALENDAR 41.9mm 720025 Silver
A. LANGE & SOHNE LANGE 1 TOURBILLON PERPETUAL CALENDAR 41.9mm 720025 Silver
A. LANGE & SOHNE LANGE 1 TOURBILLON PERPETUAL CALENDAR 41.9mm 720025 Silver

LANGE 1 OUT OF COLLECTION

TOURBILLON PERPETUAL CALENDAR

720025

Official retail price

€290,800

SECOND HAND PRICE

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Gender Men
Movement type Self-Winding
CASE MATERIAL Platinum
GLASS Saphir
STRAP LOCK SYSTEM Pin Buckle
WATER RESISTANCE 30m
LIMITED EDITION 100
CASE BACK Saphir
POWER RESERVE 50h
CASE DIAMETER 41.90mm
STRAP MATERIAL Leather
WARRANTY 2 years
Day and Night Indicator

The night and day indicator is an aesthetic complication which displays on the dial the movement of the sun and the moon. This complication must not be confused with the moonphase.

Big Date

Watches featuring a « big date » display an oversized window and have two independent date discs.

Perpetual Calendar

The perpetual calendar complication displays the day, date and month, but it requires less adjustment than an annual calendar. This complication knows the number of days in each month but it also knows the year so that it will automatically adjust for leap year. The next time a perpetual calendar will have to be adjusted is in the year 2100.

Moonphase

Watches featuring a moonphase complication display new moons, first quarters, full moons and last quarters.

Tourbillon

The tourbillon system was made to compensate the Earth’s gravitational force by mounting the escapement in a revolving cage. It gives the watch a better accuracy. This complication is known as one of the most difficult to make.

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