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This generic flat sapphire crystal is compatible with Chopard Happy Diamonds reference 204780, featuring an oval shape measuring 20.1mm in length, 13.3mm in width, and 0.9mm in thickness. Its flat design provides excellent optical clarity and scratch resistance for reliable watch glass replacement.
Flat oval shape offers a classic and elegant aesthetic
0.9mm ultra-thin profile for precise low-profile case fitting
High hardness (9 Mohs) resists daily scratches and wear
Generic design – always verify dimensions with original glass
Length: 20.1 mm
Width: 13.3 mm
Thickness: 0.9 mm
Shape: Flat Oval (Elliptical)
Material: Synthetic sapphire
Compatible Reference: Chopard Happy Diamonds 204780
Replacement for Chopard Happy Diamonds ref. 204780 crystal
Suitable for oval-shaped watch restoration and repair
1.Is this an original Chopard part?
No, it is a generic compatible crystal, not OEM.
2.Will it fit my Happy Diamonds 204780 perfectly?
Only if your watch uses exactly 20.1×13.3×0.9mm oval glass; measure before purchase.
3.Is 0.9mm thickness durable enough?
Yes, sapphire is very hard; 0.9mm provides adequate strength for normal daily wear.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
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