Available from 2003 to 2007, the Grand Langematik ref. 309.031 sports a 40.5mm pink gold case and a black dial. It runs on the Sax-O-Mat L921.4 caliber.
Movement Type
Automatic
Caliber
L921.4Jewels
45
Reserve
46
Frequency
21600
Hands
Small Seconds
Lug Distance
20.00 mm
Material
Pink Gold
Glass
Sapphire
Thickness
10.70 mm
Diameter
40.50 mm
Dial Color
Black