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ZRC Grands Fonds 300 MN64™ Heterium Rubber Dive Watch 41.5mm (GF421618)

ZRC Grands Fonds 300 MN64™ Heterium Rubber Dive Watch 41.5mm (GF421618)

The contemporary face of the original Grands Fonds 300®. Featuring a stunning navy blue/black gradient dial, non-magnetic 316L steel case, and a premium FKM rubber strap. Equipped with ZRC's exclusive ECS™ system and Crown Protection System™ (CPS™) at 6 o'clock. Guaranteed water-resistant to 1000m.

Free shipping worldwide on orders above HKD $1500 on order

HK$32,900.00
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【Design & Craftsmanship】

With its captivating navy blue/black gradient dial and satin-finished steel case, this MN64™ HETERIUM™ version represents the quintessence of the Grands Fonds 300® diver’s watch. It is paired with an extremely comfortable FKM rubber strap, inspired by the design of the original metal bracelet, offering both supreme comfort and durability for everyday wear and extreme diving conditions.


【ZRC Exclusive Technologies】


Crown Protection System™ (CPS™): The signature screwed crown is located at 6 o'clock with a reversed pitch. For ultimate safety, the strap can only be closed and worn if the crown is perfectly screwed down, guaranteeing 100% water resistance.

Easy Clean System™ (ECS™): A unique patented technology (Patent N°1462496) that ensures optimal rinsing after a dive. It effectively eliminates impurities and sea salt crystals lodged between the case and the unidirectional rotating bezel.

Programmed Deformation Caseback: An exclusive ZRC innovation that ensures the watch maintains exceptional water-tightness even under extreme pressure in the deep sea.

【Technical Specifications】


SKU: GF421618

Case: 41.5 mm, Monobloc non-magnetic 316L stainless steel (ISO764 Standard: 4800 A/m)

Bezel: Unidirectional rotating bezel with 60 divisions, Ceramic insert, equipped with ECS™ system

Glass: Anti-reflective 3 mm cambered sapphire crystal

Water Resistance: Guaranteed for 1000 m (100 ATM), tested to 1500 m

Movement: Swiss Made SELLITA “Elaborated” SW300-1, Automatic winding

Power Reserve: 56 hours (Beat rate: 28,800 / 4Hz)

Strap: Premium Rubber (FKM) strap with steel single tongue pin buckle


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Delivery Options

  • International Shipping
  • S.F. Express - EF Locker Pickup
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  • S.F. Express - Circle K Store Pickup
  • S.F. Express - Office / Home Delivery
  • In-store Pickup

Payment Options

  • Google Pay
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  • Credit card (Pay in Store)
  • Cash
  • Alipay (HK)
  • Alipay (China)
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  • Paypal
  • ATM/FPS Transfer/Payme
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