SHANGHAI FAMOUS TRADE CO.,LTD
SHANGHAI FAMOUS TRADE CO.,LTD For The Good Reputation,By The Best Quality ,With The Fastest Efficiency.
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Sapphire Watch Cases – Multi-Color, Waterproof, Anti-Scratch, Fully Customizable
In the world of luxury watchmaking, sapphire crystal cases represent the ultimate fusion of cutting-edge engineering and breathtaking aesthetics. Unlike traditional metal cases, our 100% synthetic sapphire (Al₂O₃) watch cases offer complete transparency, near-diamond scratch resistance (Mohs 9), and customizable sizes – all while maintaining exceptional structural integrity.
These cases are CNC-machined from single-crystal sapphire, ensuring optical clarity rivaling gemstones while providing water resistance. Available in clear, blue, red, and custom hues, they allow watchmakers to showcase intricate movements while offering unmatched durability against daily wear, chemicals, and impacts.
Key Features of Sapphire watch case
1. Unrivaled Durability
2. Stunning Transparency & Color Options
3. Advanced Manufacturing
4. Fully Customizable Designs
Applications Sapphire watch case
Luxury & High-Complication Watches:
Skeleton watches – Showcase movements with perfect clarity
Diver’s watches – Scratch-proof, corrosion-resistant
Smartwatches – Combines durability with wireless signal transparency
Limited Edition & Concept Timepieces:
Transparent colored cases for avant-garde designs
Hybrid sapphire-metal fusion cases
Artisan collaborations with engraved sapphire
Aerospace & Professional Use:
Pilot’s watches – Resistant to altitude/temperature changes
Military-grade – EMI-transparent for tactical use
Medical instruments – Biocompatible, sterilizable
Jewelry & Fashion Accessories:
High-end cufflinks with sapphire cases
Designer eyewear frames
Technical Specifications
Parameter | Specification |
|---|---|
| Material | Single-crystal Al₂O₃ (sapphire) |
| Hardness | Mohs 9 (2,400 HV) |
| Water Resistance | Up to 100m (10ATM) |
| Light Transmission | >92% (visible spectrum) |
| Thermal Stability | -50°C to +500°C (short-term) |
| Density | 3.98 g/cm³ |
| Tensile Strength | 400 MPa |
| Color Options | Clear, Red, Blue, Black, Yellow, Custom |
| Surface Finish | Mirror (Ra <0.5nm), Satin (Ra 0.8-1.2μm) |
| Thickness Range | 0.5mm – 5.0mm (±0.01mm) |
Q&A
Q1: How does sapphire compare to titanium or ceramic cases?
A1: Sapphire offers perfect transparency, higher scratch resistance than ceramic, and better impact absorption than titanium while being equally lightweight.
Q2: Are colored sapphires as strong as clear ones?
A3: Yes. Doping elements (e.g., Cr³⁺ for red, Fe²⁺/Ti⁴⁺ for blue) don’t compromise hardness.
Q3: Can sapphire cases be repaired if cracked?
A5: Unlike metal, cracked sapphire must be replaced – but our modular designs allow partial section swaps.
Q4: Do sapphire cases interfere with wireless charging?
A7: No – sapphire is RF-transparent, ideal for smartwatches.
Q5: How to clean sapphire cases?
A8: Use microfiber + isopropyl alcohol; avoid ultrasonic cleaners.