Montre ZRC Grands Fonds 300 MN64 Ruthnium GF42103 Lepage Montre ZRC Grands Fonds Osmium MN64 2022 Le Spcialiste Vintage ZRC MN64 RUTHENIUM GREY RUBBER DATE Montre ZRC Grands Fonds Osmium MN64 2022 Le Spcialiste Vintage Montres ZRC 1904 GF 300 MN64. ZRC MN64 RUTHENIUM NEW (with the SW 300 movement) ZRC, founded in 1904 by Edmond Zuccolo and Joseph Rochet, has constantly innovated by imagining bracelets and straps and then dive watches. The ZRC Grands Fonds combines comfort and traditional aesthetics with uncompromising technical reliability. With the contemporary appearance of the original Grands Fonds 300, this variation fitted with a rubber (FKM) strap bears all the attributes of a divers watch. With its black dial, satin finished steel case, and grey rubber (FKM) strap, this model embodies the quintessence of the ZRC Grands Fonds 300 divers watch. The Crown Protection System provides a secure watertight seal. Its wristband can only be fastened if the crown at 6 oclock is fully screwed down. Its ECS system ensures optimal rinsing after a dive, enabling the removal of impurities and salt crystals lodged between the unidirectional rotating bezel fitted with a ceramic insert and the case. Its hands and date are driven by a reliable Swiss Made self winding caliber.