The Oyster Perpetual Grid magnetic type is matched with an electro-optical blue dial and luminous hour markers. The green crystal mirror reduces light reflection and keeps the display clear.
The lattice magnet type, which was launched in 2007, is equipped with a green crystal mirror and is a pioneering invention in the watchmaking industry. The mirror surface is matched with an electro-optical blue dial, which contrasts with the iconic lightning-shaped second hand.
The green sapphire crystal is a unique watch crystal developed by , it is scratchproof, fade-proof and available exclusively on the Milgauss.
The grid magnetic type is equipped with a 3131 self-winding mechanical movement, which is all developed and manufactured by . It combines the brand's patented advanced technology to ensure that the watch is protected from the interference of magnetic fields. Like all perpetual movements, the 3131 movement has also obtained the Swiss official accreditation timepiece certification, which is specially awarded to precision watches that have successfully passed the Swiss Chronometer Testing Center (COSC) test. The structure of this movement is the same as that of all Oyster watch movements, with extraordinary reliability.