DESCRIPTION
reference
116509
Case
Oyster, 40 mm, white gold
bezel
Fixed, engraved tachymeter, 18 ct white gold
Waterproof performance
Water resistant to 100m/330ft
movement
Perpetual, mechanical chronograph, self-winding
Caliber
4130, entirely manufactured in-house by Rolex
power reserve
about 72 hours
bracelet
Oyster (3-row link)
dial
blue
Certification
Precision chronometer (COSC, Rolex certified after casing)