Generic Cartier Tortue 3689 Sapphire Crystal 18.9mm

Product Description

This generic sapphire crystal is designed for the Cartier Tortue 3689, measuring 18.9mm × 18.9mm with an overall thickness of 1.55mm and a step thickness of 0.9mm. Featuring a square profile with stepped edge, it offers excellent optical clarity and scratch resistance for reliable watch glass replacement.

Features & Function

• Square shape with stepped edge precisely fits Tortue case design

• Step thickness design (0.9mm) ensures secure case fitting

• High hardness (9 Mohs) resists daily scratches and wear

• Generic replacement for damaged or scratched original crystals

Specifications

• Length: 18.9 mm

• Width: 18.9 mm

• Overall Thickness: 1.55 mm

• Step Thickness: 0.9 mm

• Shape: Square with stepped edge

• Material: Synthetic sapphire

• Compatible Model: Cartier Tortue 3689

Applications

• Replacement crystal for Cartier Tortue 3689

• Suitable for luxury tonneau-shaped watch restoration

FAQs

1.Is this an original Cartier part?
No, it is a generic compatible crystal, not OEM.

2.Will it fit my Tortue 3689 perfectly?
Only if your watch uses exactly 18.9×18.9mm stepped square glass; measure before purchase.

3.What is the step thickness for?
The 0.9mm step allows the crystal to sit flush against the case rim for a secure fit.