This 39mm black  rose gold dive watch case is a classic BB58 mod design, built for professional watch modding and custom builds. Made from solid 316L stainless steel with black or rose gold coating, it features a domed sapphire crystal, 20BAR (200m) water resistance, and broad movement compatibility. Ideal for NH and ETA-based automatic movements, this case offers durability, vintage proportions, and a premium diver aesthetic. Custom logo service is supported.

Stainless Steel Band for 39mm BB58-->

Specifications:

• Case Material: Solid 316L stainless steel, black / rose gold coated

• Case Size: 39mm diameter × 12.5mm thickness (≈14mm with sapphire)

• Dial Fit: 28.5mm–29.3mm

• Strap Width: 20mm

• Glass: Domed sapphire crystal

• Water Resistance: 20BAR / 200m

• Bezel: Unidirectional, alloy insert

• Bezel Size: 37.1mm × 31.3mm

• Case Back: Solid back / glass back optional

• Movement Fit:
  NH34 / NH35A / NH36A / NH38 / NH39 / NH70 / NH72
  ETA 2824 / PT5000 / ST2130

Service:

• Custom Logo: Case customization supported (extra fee)