With its grey sunray dial, satin-finished steel case, and FKM rubber band, this model embodies the quintessence of the ZRC Grands Fonds 300® diver’s watch.
The Crown Protection System™ provides a secure watertight seal. Its wristband can only be fastened if the crown at 6 o’clock 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.
ZRC RUTHENIUM GF42103
Monobloc case
Screwed case back and crownDiameter: 41,5 mm
Nonmagnetic 316L Steel
ISO764 Standard: 4800 A/mBezel: ECS® system (Patent N°1462496)
Unidirectional 60 divisions rotating bezel.
Ceramic insertCrown: Located at 6H (Crown Protection System™). Inverted screwed thread with dual sealing
Glass: Sapphire 3 mm padded anti-reflection
Water resistance: 1000 meters proofed, tested up to 1500m
Calibre: SELLITA “Elaborated” SW300-1
Setting: + 5sec/day
Amplitude: (± 5sec/day) = from 0 to 10 sec/day max.
Winding: Automatic winding
Power reserve : 56 hours
Rubber FKM strap compatible for both tongue buckles. Inspired by the design of the metal band it is very comfortable and available in many colors.
Stainless steel buckle