Ref. 309.031
The A. Lange & Söhne Grand Langematik, reference 309.031, has a 40 mm case in 18-carat pink gold. The case measures 10.7 mm high, has a see-through back and is water resistant to 30 metres. The black dial carries an outsize date. A black alligator leather strap closes with an 18-carat pink gold pin buckle. Self-winding calibre L921.4 contains 378 parts and runs for 46 hours. The movement beats at 21,600 semi-oscillations per hour and carries a ZERO-RESET mechanism.
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TECHNICAL SPECIFICATIONS
CASE
Diameter
40mm
Thickness
10.7mm
Case Material
Rose Gold
Water Resistance
30m
MOVEMENT
Movement Type
Automatic
Caliber
L921.4
Power Reserve
46h
Frequency
21,600 vph (3 Hz)
DIAL
Dial Color
Black
BRACELET/STRAP
Bracelet/Strap
Alligator Skin
Clasp Type
Buckle
Clasp Material
Rose Gold
FEATURES & COMPLICATIONS
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Other watches with the L921.4 calibre
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308.021
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QUICK FACTS
BRAND
A. Lange & SöhneREFERENCE
309.031COLLECTION
SaxoniaMOVEMENT
AutomaticCALIBER
L921.4CASE MATERIAL
Rose GoldWATER RESISTANCE
30m (rain/splash)FOR WATCH DEALERS
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