A robust and versatile diver-style watch case built for professional customization. Machined from solid 316L stainless steel, this 42mm case features a scratch-resistant sapphire crystal and is engineered to accommodate a wide range of popular Seiko NH series automatic movements. With its standard sizing for dials, bezels, and straps, it provides the perfect foundation for building a custom dive watch.

Specifications

• Material: 316L Stainless Steel

• Diameter: 42mm (excluding crown)

• Thickness: 15mm

• Glass: Synthetic Sapphire Crystal

• Lug Width: 22mm (fits standard straps/bracelets)

• Movement Compatibility: Seiko NH35, NH36, NH34, NH38

• Dial Compatibility: 28.5-29mm

• Bezel Insert Compatibility: 38mm x 31.5mm

• Water Resistance: 10 Bar / 100 Meters (based on case construction)

Key Features

• Broad Movement Support: Designed to seamlessly fit NH35, NH36, NH34 (GMT), and NH38 (no-date) movements, offering maximum flexibility for custom builds.

• Premium Dive-Style Construction: Features a robust 15mm thick case and screw-down components, built to withstand the demands of a diver-style watch.

• Standard Modding Dimensions: With a 28.5mm dial seat and 38x31.5mm bezel insert size, it accepts the vast majority of aftermarket parts designed for Seiko mods.

• Scratch-Resistant Sapphire: High-quality sapphire crystal ensures lasting clarity and protection against daily wear.

What's Included

• 42mm Stainless Steel Watch Case

• Sapphire Crystal (installed)

• Case Back

• Crown

• Set of Gaskets

Note: Movement, dial, hands,  and strap are NOT included.