The Seamaster 300M Professional Chronometer ref. 2031.50.00 has a titanium case and matching bracelet. Its bezel, also titanium, carries an engraved diver's scale.
Movement Type
Automatic
Caliber
1120Jewels
23
Reserve
44
Frequency
28800
Hands
Center Seconds
Shape
Round
Lug Distance
20.00 mm
Material
Titanium
Glass
Sapphire
Diameter
41.00 mm
Water Resistance
300.00 m
Dial Color
Black
Material
Bracelet
