I’m not too familiar with Minase, but it looks like the brand has built much of its modern identity around watches that look complicated before you start talking about the movement. Cases within cases, exposed architecture, aggressive finishing… there’s usually plenty happening from what I can see. The new Mastercraft J3 heads in a more straightforward direction.
The J3 draws inspiration from Minase’s early M3, according to the brand, though this is clearly a contemporary interpretation rather than a recreation. The stainless-steel case measures 37mm across and 9.9mm thick, giving Minase a compact three-hander that feels unusually restrained alongside watches like the Divido and Windows.
Minase uses circular brushing alongside polished surfaces, with the bezel receiving the company’s Sallaz polishing. The dial follows a similar approach. A sand-textured central section is surrounded by a more defined outer track, with applied markers and sharply cut hands providing some dimensionality. Minase currently lists white, beige, and grey dial options on its international site.
At first glance, this feels like a good direction for the brand. Minase’s more elaborate watches certainly make an impression, but the J3 gives its case and dial finishing fewer places to hide. The design is simple enough that the execution becomes a larger part of its identity.
The movement prompts a bigger question, though. For the first time in Minase’s history, according to the company, one of its watches uses a Japanese movement. Inside the J3 is the Miyota 90S5, a 4Hz automatic caliber with 24 jewels and approximately 42 hours of power reserve. The relatively slim movement also helps Minase keep the complete watch under 10mm thick.
There’s some logic here. Minase is a Japanese manufacturer, Miyota is part of Citizen, and the 90S5 is a straightforward movement suited to a thin three-hander. Still, the caliber becomes harder to ignore once we start talking about a watch priced above $1,000. That puts much of the J3’s value proposition on everything surrounding the movement. Buyers are effectively paying for Minase’s machining, dial construction, hand finishing, and relatively small-scale Japanese production. Minase says it produces fewer than 500 watches annually across the brand.
The J3 also gets sapphire crystal, 5 ATM water resistance, blue luminous material on the hands and indices, and a quick-change system compatible with calf leather, rubber, and Minase’s stainless-steel bracelet. And this is where the J3 becomes an interesting proposition. Simplifying the design may actually make Minase easier to understand. The 37mm dimensions and layered dial give the brand’s finishing a more conventional canvas, and there’s something appealing about that approach.
However, a Miyota 90S5 at this price (starting at $1,800) creates an obvious hurdle. The J3 will have to make its case through execution rather than movement specifications. Until we see one in person, that remains the biggest unanswered question surrounding what could otherwise be one of Minase’s more approachable releases.
Co-Founder & Senior Editor
Michael Peñate is an American writer, photographer, and podcaster based in Seattle, Washington. His work typically focuses on the passage of time and the tools we use to connect with that very journey. From aviation to music and travel, his interests span a multitude of disciplines that often intersect with the world of watches – and the obsessive culture behind collecting them.