This 41mm modified Seamaster 300 case features a rose gold finish with premium sapphire crystal, engineered to accommodate NH35 automatic movements. The robust construction delivers the iconic dive watch aesthetic with enhanced durability and scratch resistance. Perfect for watch enthusiasts and custom builders seeking a refined case with proven reliability and timeless design.

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• Case Material: 316 Stainless Steel

• Case Diameter: 41mm (Without Crown)

• Dial : 31mm

• Crystal: Flat Sapphire Glass

• Crown: Screw-In Type

• Strap Lug Width: 20mm

• Clasp Style: Single-Fold Deployant Buckle (Included)

• Strap Interface: Concave Lug Design

• Water Resistance:30M

Movement Compatibility
Specifically designed and machined to perfectly fit Seiko NH35, NH36, and NH38 automatic movements. The case construction includes proper stem height and dial seat for straightforward installation.

Key Features & Benefits

• Clean, Unbranded Design: Offers complete creative freedom for a personalized build.

• Premium Sapphire Crystal: Provides exceptional scratch resistance and clarity.

• Secure Screw-In Crown: Enhances case integrity and dust/moisture resistance.

• Ready-to-Build: Includes a folding clasp; just add your chosen NH movement, dial, hands, and strap.

• Concave Lugs: Ensure a flush and secure fit with a wide variety of 20mm straps.

Important Notes for Buyers

Please Read Before Purchase

1. This is a watch CASE only. It does not include a movement, dial, hands, or a complete strap.

2. Generic / Unbranded Item: This product is sold as an unbranded accessory part without a registered trademark.

3. DIY Assembly Required: Some technical skill is needed to install the movement, dial, and hands. Ensure you have the proper tools.

Package Includes

• Unbranded 41mm Alloy Watch Case (with installed sapphire crystal)

• Screw-Down Case Back

• Single-Fold Deployant Buckle