ZRC MN64 Heterium – Rubber

The ZRC MN64 Heterium Rubber is a professional Grands Fonds dive watch with a navy blue to black gradient dial, satin-finished 316L stainless steel case, ceramic bezel, 6 o’clock crown, and rubber strap. Inspired by the original Grands Fonds, this model combines ZRC’s historic dive-watch identity with modern technical construction, including the Crown Protection System and ECS bezel-cleaning system.

The Crown Protection System is designed so the watch cannot be properly worn unless the crown is fully screwed down. The ECS system allows fresh water to circulate through the bezel area after diving, helping remove salt crystals and impurities between the bezel and case. The MN64 Heterium Rubber is powered by a Swiss automatic Sellita “Elaborated” SW300-B movement and is water resistant to 1000 meters, tested up to 1500 meters.

Specifications

Brand: ZRC Genève
Model: MN64 Heterium Rubber
Reference: GF4216121218
Collection: Grands Fonds MN64
Case Size: 41.5mm
Case Construction: Monobloc case
Case Material: Nonmagnetic 316L stainless steel
Caseback: Screwed caseback
Crown: Screwed crown at 6 o’clock with Crown Protection System
Crown Construction: Inverted screw thread with dual sealing
Dial: Navy blue to black gradient dial
Bezel: Unidirectional 60-division rotating bezel
Bezel Insert: Ceramic
Bezel System: ECS bezel-cleaning system, Patent No. 1462496
Crystal: 3mm padded sapphire crystal with anti-reflective treatment
Movement: Sellita “Elaborated” SW300-B automatic
Beat Rate: 28,800 vph / 4Hz
Power Reserve: 56 hours
Functions: Hours, minutes, seconds
Date: No date
Water Resistance: 1000 meters, tested up to 1500 meters
Strap: Rubber strap
Clasp: ZRC clasp

Authorized Dealer

Falk Watches is an authorized dealer for ZRC Genève. Each new ZRC watch purchased from Falk Watches is sold with its full manufacturer warranty and authorized dealer support.