Milgauss is a special model equipped with the strong magnetic field resistance required in scientific, medical, and electronics fields.
The inner case, made of a ferromagnetic alloy, protects the movement from magnetic fields of up to 1,000 gauss.
In terms of design, it's truly one of a kind, featuring a green sapphire crystal in the brand's signature color and an orange lightning bolt-shaped second hand that evokes the image of an electric shock.
Now that production has ended, it has become increasingly rare, and due to its niche origins and distinctive design, it is spoken of among ROLEX enthusiasts as a unique and sophisticated professional tool.