An Ode to Ultimate Simplicity and Japanese Craftsmanship
In the quiet universe of high horology, true luxury often speaks in a whisper rather than a shout. This August, Japanese boutique manufacture Minase unveils its latest creation, the Mastercraft J3, set to make its official debut at Geneva Watch Days at the Beau-Rivage Palace.
Drawing inspiration from the iconic M3 series, internationally celebrated through special editions like the M3 Nori, the Mastercraft J3 pays homage to Minase’s origins while introducing a fresh, modern aesthetic. It represents a subtle, poetic dialogue between timeless Japanese artisanal tradition and contemporary lifestyle requirements.
Refined Dimensions and Micro-Artisanal Sallaz Polishing
To achieve a silhouette that feels like a natural extension of the wrist, Minase has thoughtfully refined the timepiece’s proportions. The Mastercraft J3 features a versatile 37.0 mm cushion-shaped case with an ultra-slim 9.9 mm profile, offering a unisex design suited for both his and her wardrobes.
At the heart of Minase’s design philosophy is an unwavering dedication to hand-finishing. Each steel surface of the J3 is painstakingly hand-polished using the ancient Sallaz polishing technique. This rare artisanal method yields mirror-like, distortion-free surfaces juxtaposed with razor-sharp edges, catching the light in a delicate dance of highlights and soft shadows.
Light Sand Dials and Japanese Heartbeat
The dial of the Mastercraft J3 acts as a canvas of subtle texture and depth. Offered in three classic colorways, White, Beige, and Black, the light-sand finished dials interact gracefully with ambient lighting. Sharp-cut luminescent hands and indexes ensure optimal readability, bathing the dial in a gentle blue glow after dusk.
Marking a historic milestone for the brand, the J3 is the first Minase line to feature a high-grade Japanese movement: the MIYOTA 90S5 automatic caliber. Boasting a 28,800 VPH (4Hz) frequency and a 42-hour power reserve, this reliable engine reflects Minase’s commitment to delivering accessible, authentic Japanese mechanical craftsmanship.
Personalized Versatility for the Modern Collector
Designed for effortless adaptability, the Mastercraft J3 incorporates a one-touch quick-change strap mechanism. Wearers can effortlessly customize their look across a range of options:
- Classic Stainless Steel Bracelet
- Crocodile-Embossed Calf Leather Straps
- Versatile Rubber Straps
- Smooth Calf Leather Straps
Key Technical Specifications
| Feature | Specification |
| Case Size | 37.0 mm Diameter | 9.9 mm Thickness |
| Case Material | Stainless Steel with Sallaz Hand-Polishing |
| Glass & Water Resistance | Sapphire Crystal | 5 ATM (50 meters) |
| Dial Options | Light Sand Texture (White, Beige, Black) |
| Movement | Japanese Miyota 90S5 Automatic Caliber |
| Power Reserve | Approx. 42 Hours (28,800 VPH) |
| Strap Options | Interchangeable Steel, Calf Leather, or Rubber |
Availability & Pricing
The Minase Mastercraft J3 will officially launch during Geneva Watch Days at the Beau-Rivage Hotel. Collectors and enthusiasts worldwide can also pre-order timepieces through the official Minase Webshop with worldwide delivery.
Contact us for the full press release.