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New Releases · 2026-11-02

Minase Mastercraft J3 White brings Sallaz finishing to a compact Japanese automatic

The white dial variant pairs a 37 mm steel case with the Miyota 90S5 and interchangeable straps.

By Chronolume digest · Original English summary · Based on MONOCHROME Watches; official manufacturer specifications

Minase Mastercraft J3 White — White-dial Mastercraft J3
White-dial Mastercraft J3. Image source: MONOCHROME Watches. MONOCHROME Watches ↗

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What to know

The white Mastercraft J3 keeps the dial pale and finely textured, allowing the raised metal markers to cast small shadows across it. A polished circular bezel sits inside the compact cushion-shaped case, creating a clear contrast between the two outlines.

Minase Mastercraft J3 White — White J3 alongside the dark and beige variants
White J3 alongside the dark and beige variants. Image source: MONOCHROME Watches. MONOCHROME Watches ↗

The steel case measures 37 mm across and 9.9 mm thick. A Miyota 90S5 automatic provides approximately 42 hours of reserve, protected by sapphire and 50-metre water resistance. The light dial gives this version a restrained appearance, with blue-glowing luminous material on the hands and markers.

Minase Mastercraft J3 White — White and dark J3 watches with different strap options
White and dark J3 watches with different strap options. Image source: MONOCHROME Watches. MONOCHROME Watches ↗

At a glance

Specifications reported by MONOCHROME Watches; official manufacturer specifications
ModelMastercraft J3 White
Case37 × 9.9 mm stainless steel
DialWhite sand texture
MovementMiyota 90S5 automatic
Power reserveApproximately 42 hours
Water resistance50 m
CrystalSapphire
FinishingSallaz-polished bezel and bevels

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Source & attribution

MONOCHROME Watches; official manufacturer specifications · Published 2026-11-02 ↗