This option covers an additional case upgrade for those seeking enhanced durability and refined craftsmanship. Built from 316L stainless steel, the case delivers lasting strength and a premium finish. Inspired by the classic Speedmaster design, it maintains a balanced aesthetic that complements modern seiko mods and seiko movements. Each piece is hand-assembled under strict quality control to ensure precision and reliability. The curved acrylic glass adds vintage character while maintaining clarity, and the aluminium bezel provides lightweight resilience. Tested for waterproofing and designed for performance, this seiko mod component upholds professional standards in both form and function.