Launched in 2001, the Langematik Perpetual Calendar ref. 310.021 includes a 38.5mm yellow gold case, a champagne dial, and a watchwinder. The 10 o'clock corrector button was transitioned to a recessed style in 2004.
Movement Type
Automatic
Caliber
L922.1Jewels
43
Reserve
46
Frequency
21600
Hands
Small Seconds
Lug Distance
20.00 mm
Material
Yellow Gold
Glass
Sapphire
Thickness
10.20 mm
Diameter
38.50 mm
Dial Color
Champagne
