Arcanum Mk1

The Arcanum Mk1 is crafted for those who appreciate precision, artistry, and individuality. This striking 39mm stainless steel timepiece features a silver hollow skeleton dial that reveals the rhythmic motion of its Seiko NH70 automatic movement, framed by clean black baton hands with C3 lume for visibility in any light.

Each watch is hand-assembled from a blend of OEM Seiko and premium aftermarket components, ensuring both reliability and exclusivity. With its sapphire crystal glass, transparent case back, and 316L stainless steel case, the Arcanum Mk1 is built to endure while showcasing its mechanical beauty.

Paired with a 20mm silver Monarch bracelet, this watch delivers a refined yet modern presence on the wrist. Water-resistant to 100 meters, it balances rugged capability with elegant design.

Specifications:

Case Diameter: 39mm (without crown)

Thickness: 13mm

Glass: Sapphire crystal

Water Resistance: 100m

Strap: 20mm Silver Monarch Bracelet

Movement: Seiko NH70 Automatic

Case Back: Transparent exhibition case back

Case Material: 316L Solid Stainless Steel

Dial: Silver Hollow Skeleton (29mm) with Black Baton Hands & C3 Lume

The Arcanum Mk1 is more than a watch—it’s a statement of craftsmanship and character.

Supplied in leatherette presentation box.

👉 Note: This is a hand-assembled custom watch build, created from a combination of OEM Seiko parts and high-quality aftermarket components. The Arcanum Mk1 is not an official Seiko or other branded product, nor is it affiliated with, endorsed by, or sponsored by Seiko, Patek Philippe, or any other watch brands. All trademarks remain the property of their respective owners. The Arcanum Mk1 is a custom build created by Laois Watch Works.