【Replacement Stainless Steel Crown for Cartier Ballon Bleu 28/33/36/42mm – Fluted Crown with Synthetic Spinel】 – Precision-engineered replacement watch crown (表冠/把头) designed for Cartier Ballon Bleu de Cartier series. Available in sizes to fit 28mm, 33mm, 36mm, and 42mm case diameters. Features the iconic fluted (凹槽式) crown profile set with a synthetic cabochon-shaped spinel (凸圆形合成尖晶石) – replicating the signature Cartier aesthetic-. Crafted from high-quality stainless steel to match the original case finishing. Includes crown stem (把杆) for complete replacement – universal fit for all Ballon Bleu automatic and quartz models.
Perfect Fit for All Ballon Bleu Sizes – Specifically engineered for the full range of Ballon Bleu de Cartier references. Available in four diameters to match your case size: 28mm (quartz models), 33mm (automatic/quartz), 36mm (automatic), and 42mm (automatic calendar models)-. The crown is universally compatible across all sizes – men and women alike-.
Iconic Fluted Crown Design – Features the distinctive fluted (凹槽式) crown profile that has become a hallmark of the Ballon Bleu collection--2. The grooved surface provides excellent grip for easy time-setting and winding, while the synthetic spinel cabochon adds the signature blue accent that defines the collection-1.
Synthetic Spinel Cabochon – Crown tip is set with a cabochon-shaped synthetic spinel (凸圆形合成尖晶石) in classic blue-. The gemstone is precision-set for a flush, OEM-quality finish – replicating the iconic “blue bubble” that gives the Ballon Bleu its name-. Available in blue (standard) and other color options upon request.
Premium Stainless Steel Construction – Crafted from solid stainless steel with a polished finish that matches the original Ballon Bleu case-. Corrosion-resistant and durable – maintains its appearance through years of daily wear. Waterproof design ensures reliable performance up to 3 bar (30m)-.
Complete Crown & Stem Set – Includes both the crown (表冠/把头) and crown stem (把杆) – a complete replacement solution-. Universal fit design compatible with both quartz and automatic movements-. The integrated stem ensures proper thread engagement and reliable winding/time-setting function.
OEM-Spec Alternative – Precision-machined to match original Cartier specifications for crown height, diameter, and thread pattern-. A cost-effective solution compared to OEM Cartier service parts. Note: These are aftermarket replacement parts, not genuine Cartier® parts.
Essential for Watch Restoration – Ideal for replacing worn, damaged, or corroded crowns-. Compatible with Ballon Bleu's interchangeable strap/bracelet system-. Professional installation recommended to ensure proper sealing and water resistance.












