Known traditionally as the 'boys-size' model, the Datejust 31 is a scaled-down version of the standard Datejust. The case diameter is 31mm, and it comes in numerous material and style combinations. It runs on the caliber 2235 movement.
Movement Type
Automatic
Caliber
2235Jewels
31
Reserve
48
Frequency
28800
Hands
Center Seconds
Shape
Round
Lug Distance
16.00 mm
Glass
Sapphire
Diameter
31.00 mm
Water Resistance
100.00 m
Dial Color
Silver
Material
Silver