The 40mm Diver Case is a premium modding platform inspired by the Seiko SPB149J1/SPB143J1 aesthetic. Crafted from solid 316L stainless steel, it features a bubble sapphire crystal with blue anti-reflective coating for superior clarity and vintage appeal. The unidirectional bezel and 100m water resistance make it dive-ready, while compatibility with NH-series movements (NH34, NH35, NH36, etc.) and 28.5mm dials offers unparalleled customization flexibility. Completed with a rubber strap, this case delivers professional durability in a versatile 40mm size.

Specifications