39mm Dive Watch Case BB58 Mod 20BAR Waterproof Dome Sapphire Glass 39mm Black Bay Watch Case for NH34 NH35 NH36 NH70 ETA2824 PT5000 Watch Parts Color:Grey Bezel insert Scratch-resistant sapphire glass provides premium

Scratch-resistant sapphire glass provides premium clarity and long-term protection

Special Design Note • Case and chapter ring are packaged separately • Chapter ring is not fixed and can be replaced freely • Chapter ring replacement does not require glass removal • Ideal for modders and custom builders

With 20 ATM water resistance

● Dial NO logo

Case Diameter: 42 mm

39mm Dive Watch Case BB58 Mod 20BAR Waterproof Dome Sapphire Glass 39mm Black Bay Watch Case for NH34 NH35 NH36 NH70 ETA2824 PT5000 Watch Parts Color:Grey Bezel insert Scratch-resistant sapphire glass provides premiumThis 39mm 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.