Nivada Grenchen Watch: F77 MKII Black Opal 100th Anniversary Limited Edition

Nivada Grenchen: The F77 MKII Black Opal, a centenary edition of the brand featuring a natural black opal dial

The Nivada Grenchen F77 MKII Black Opal 68062A77 celebrates the Swiss house’s 100th anniversary with a major evolution of its iconic sports watch with an integrated bracelet. Its 38mm 316L stainless steel case houses a dial crafted from natural black opal, whose flashes of blue, green, red, and violet evolve depending on the light. Since each stone displays its own unique variations, every Nivada Grenchen F77 Opal thus possesses a naturally unique dial.

The Nivada Grenchen F77 Opal retains the angular, integrated architecture directly inspired by the F77 of the 1970s, but now moves to a 38 mm diameter, 46.2 mm lug-to-lug, and 11.50 mm thickness. Its dial features polished silver applied indices and white luminescent dots, while a double-domed sapphire crystal with anti-reflective coating protects the whole.

At the heart of the Nivada Grenchen F77 100th Anniversary lies the La Joux-Perret G101, a Swiss automatic caliber specially introduced for this anniversary collection. It operates at 28,800 vibrations per hour / 4 Hz, contains 24 jewels, and delivers a 68-hour power reserve. This no-date movement prioritizes a clean display of hours, minutes, and central seconds, and remains visible through the transparent sapphire caseback of the F77 Black Opal.

In the 68062A77 configuration, the Nivada Grenchen F77 Opal is mounted on the integrated stainless steel bracelet that constitutes one of the fundamental elements of the F77. According to Nivada Grenchen, this measures 22 mm at the case and 16 mm at the clasp. With its water resistance of 10 ATM / 100 meters, its natural stone dial, and its visible La Joux-Perret movement, this F77 Black Opal directly combines the historical seventies aesthetic of Nivada Grenchen with contemporary Swiss mechanics.

Technical specifications

• Brand: Nivada Grenchen
• Collection: F77
• Model: F77 MKII Black Opal 100th Anniversary limited edition
• Reference: 68062A77
• Limited edition: 100 pieces 100th anniversary edition
• Movement: Mechanical self-winding
• Caliber: La Joux-Perret G101
• Caliber origin: Swiss
• Frequency: 28,800 vibrations/hour - 4 Hz
• Jewels: 24
• Power reserve: 68 hours
• Functions: Hours, minutes, and central seconds hand
• Case: 316L stainless steel
• Finish: Satin / vertically brushed with polished details
• Diameter: 38 mm
• Lug-to-lug: 46.2 mm
• Thickness: 11.50 mm
• Crystal: Double-domed sapphire with anti-reflective coating
• Caseback: Transparent sapphire, allowing the La Joux-Perret G101 caliber to be observed
• Dial: Natural black opal; no two dials are exactly alike.
• Hands: Silver, cigarette style
• Indices: Polished silver applied baton indices
• Luminescence: White luminescent dots on the dial
• Bracelet: Integrated stainless steel flat-link bracelet
• Bracelet dimensions: 22 × 16 mm
• Clasp: Folding buckle
• Water resistance: 10 ATM / 100 meters
• Origin: Swiss Made
• Nivada Grenchen warranty: 2 years

Why choose this watch?

The Nivada Grenchen F77 MKII Black Opal 68062A77 stands out above all for its genuine natural black opal dial. Unlike a printed or lacquered finish, each F77 Opal features its own variations in shade and texture. This uniqueness is complemented by a significant mechanical evolution: the La Joux-Perret G101 provides this Nivada Grenchen F77 with a 4 Hz frequency, 24 jewels, and above all a 68-hour power reserve.

Meanwhile, the Nivada Grenchen F77 Black Opal retains the codes that define the F77: a compact case, integrated bracelet, 1970s geometric aesthetic, and an all-steel construction. The anti-reflective double-domed sapphire, transparent caseback, and 100-meter water resistance make this F77 Opal as technically interesting as it is visually. For its centenary, Nivada Grenchen is thus evolving one of its most recognizable silhouettes without altering its identity.

About the Nivada Grenchen brand

Founded in 1926 in Grenchen, Switzerland, Nivada Grenchen distinguished itself during the 20th century with collections such as the Antarctic, the Chronomaster Aviator Sea Diver, and the F77. Relaunched in the modern era, the house draws on its archives to put its historical models back into production while updating their movements, materials, and finishes.

To celebrate its centenary in 2026, Nivada Grenchen has partnered with La Joux-Perret to create a new generation of F77s with natural stone dials. The Nivada Grenchen F77 Black Opal thus combines a natural black opal with the Swiss G101 caliber and a new transparent sapphire caseback. With the F77, Nivada Grenchen directly connects its 1970s integrated design to a more contemporary approach to materials and mechanics.