Compatibility & Size: Sapphire Watch Crystal, compatible with Franck Muller (Size 36.7 x 24.1 x 0.92mm). Ensure Perfect Fit: Verify the size, color, and model compatibility with your specific watch before purchasing to ensure a perfect fit and avoid returns or exchanges. Compatibility Check: Double-check your watch's requirements and compatibility details to ensure the product meets your needs. This will help you avoid any issues with returns or exchanges. Aftermarket Product: This is an aftermarket/generic made to original factory specs for a precise fit. No Logos or Markings: Features a clean design without visible branding, enhancing the aesthetic of your timepiece.