



Reference 116400GV
Model Case
Oyster, 40 mm, Oystersteel
Movement
Perpetual, mechanical , self-winding , with a magnetic shield to protect the movement
Calibre
3131, Manufacture Rolex
Diameter
40 mm
Power Reserve
Approximately 48 hours
Certification
Superlative Chronometer (COSC + Rolex certification after casing)
Material
Oystersteel
Bracelet
Oyster, flat three-piece links
Water Resistance
Waterproof to 100 metres / 330 feet
Dial
Black
The reliability and precision of an ordinary mechanical watch can be affected by a magnetic field of 50 to 100 gauss. But many scientists are exposed to much higher magnetic fields during the course of their work. Rolex’s solution was the Rolex Milgauss, created in 1956, and resistant to 1000 gauss. Hence the name of the watch, mille being French for thousand.
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