Overview

Build your own dive watch with this premium stainless steel SUB-style watch case from Tandorio. Designed for watchmakers, modders and DIY enthusiasts, it gives you a solid, water-resistant foundation for a custom build using the popular Seiko NH series automatic movements.

The case combines a two-tone silver and rose gold finish with a 120-click rotating bezel and a scratch-resistant sapphire crystal. With a 40 mm diameter and 20 ATM water resistance, it delivers genuine dive-watch presence and everyday durability.

Key Features

• Brand : Tandorio
• Type : Watch Case
• Material : Stainless Steel
• Case Diameter : 40 mm (without crown)
• Case Thickness : 13.5 mm
• Glass : Sapphire crystal
• Water Resistance : 20 ATM
• Bezel : 120-click with ceramic insert
• Dial Fit : 27.6 mm to 29.2 mm
• Strap Width : 20 mm

Highlights

• ✓ Sapphire crystal resists scratches far better than mineral glass, keeping the dial clear over years of wear
• ✓ 20 ATM water resistance makes it suitable for swimming and diving use
• ✓ 120-click ceramic bezel gives precise, satisfying timing control
• ✓ Two-tone silver and rose gold stainless steel delivers a refined, high-end look
• ✓ Compatible with a wide range of NH movements for flexible custom builds

Usage

Ideal for watch modders, hobbyists and professional watchmakers assembling or restoring automatic dive watches. The case accepts NH34, NH35, NH36, NH36A, NH37, NH38, NH39, NH70 and NH72 movements, and fits dials from 27.6 mm to 29.2 mm.

Choose your preferred bracelet style from the drop-down menu. The 20 mm lug width accepts standard Jubilee or Oyster style straps.

In the Box

• 1 x Tandorio SUB watch case
• 1 x Selected bracelet option