---
description: Generic tonneau sapphire for Franck Muller Crazy Hours 7851. 35.9×28.9×5.2×0.9mm. Scratch-resistant. Compatible, not OEM. Verify size.
title: Generic Franck Muller Crazy Hours 7851 Sapphire Crystal 35.9mm - Sofly
image: https://www.soflypart.com/wp-content/uploads/2022/04/DSC09662.jpg
---
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- **Generic Franck Muller Crazy Hours 7851 Sapphire Crystal 35.9mm**
[](https://www.soflypart.com/wp-content/uploads/2022/04/DSC09662.jpg)
# Generic Franck Muller Crazy Hours 7851 Sapphire Crystal 35.9mm
$85.00
You Saved
| Brand | Choose an option Franck Muller- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $85.00 |
| 3 - 4 | 5% | $80.75 |
| 5 - 9 | 7% | $79.05 |
| 10 - 14 | 10% | $76.50 |
| 15+ | 15% | $72.25 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $85.00 |
| 3 - 4 | 5% | $80.75 |
| 5 - 9 | 7% | $79.05 |
| 10 - 14 | 10% | $76.50 |
| 15+ | 15% | $72.25 |
Generic Franck Muller Crazy Hours 7851 Sapphire Crystal 35.9mm quantity
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## Product Description
This generic sapphire crystal is designed for the Franck Muller Crazy Hours 7851, featuring the iconic tonneau profile with dimensions of 35.9mm × 28.9mm, 5.2mm height, and 0.9mm thickness. Made from synthetic sapphire (Mohs 9), it offers exceptional scratch resistance and optical clarity for undistorted dial visibility across the unconventional layout.
## Features & Function
- Tonneau shape precisely matches Crazy Hours 7851 case
- High hardness (9 Mohs) resists daily scratches and wear
- Excellent optical clarity for undistorted dial readability
- 0.9mm thin edge profile for precise case fitting
## Specifications
- Length: 35.9 mm
- Width: 28.9 mm
- Height: 5.2 mm
- Thickness: 0.9 mm
- Shape: Tonneau (barrel-shaped)
- Material: Synthetic sapphire (Mohs 9)
- Compatible Model: Franck Muller Crazy Hours 7851
## Applications
- Replacement crystal for Franck Muller Crazy Hours 7851
- Suitable for luxury tonneau-shaped watch restoration
## FAQs
*1.Is this an original Franck Muller part?*
No, it is a generic aftermarket crystal, not OEM.
*2.Will it fit my Crazy Hours 7851 perfectly?*
Only if your watch uses exactly 35.9×28.9×5.2×0.9mm glass; measure before purchase.
*3.Does the crystal affect the Crazy Hours dial readability?*
No, its optical clarity ensures undistorted view of the random numeral layout.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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