Ref. 3881.50.37 is powered by caliber 3603, an automatic chronograph with an added GMT function. Its 'broad arrow' hands echo the 1957 Speedmaster.
Movement Type
Automatic
Caliber
36-03Jewels
41
Reserve
100
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
21.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
44.25 mm
Water Resistance
100.00 m
Dial Color
Black
