Iwc Produced by SJ .IWC Big Pilot 389410 R39 All-Ceramic .This watch is a special edition of the Big Pilot Perpetual Calendar in white zirconia ceramic, created to celebrate the anniversary of The Little Prince. It was newly released in April of the year and belongs to IWC's high-end pilot collection.1.- Diameter: 41.9mm, classic Big Pilot dial design, suitable for most men's wrist sizes.- Case made of white zirconia ceramic, extremely scratch-resistant, lightweight, and with a warm texture; paired with a white rubber strap for a sporty and waterproof style.- The crystal is made of sapphire glass with an anti-reflective coating on the inside; the case back features transparent sapphire glass.- Water resistance of 30 meters, suitable for daily handwashing, swimming, and other activities.2. Movement Configuration: IWC's in-house movement .- Movement model: 82665 automatic winding movement, with ceramic bi-directional winding pawls, nearly zero wear.- Basic parameters: 28,800 vibrations per hour.Design Highlights & Collectibility .1. The Little Prince commemorative rotor is engraved with The Little Prince emblem, a signature detail of this anniversary edition.2. The white ceramic design maximizes recognition, distinguishing it from traditional steel and precious metal pilots, making it versatile for formal and casual styles.S1 recommends this exquisite multifunctional mechanical watch for men.