At AG Watch Repair Center, we’ve had the privilege of working on some truly exceptional timepieces—and today, we’re excited to share one of our latest repair highlights: the IWC Perpetual Calendar, model IW502903.

This is no ordinary watch. Part of IWC’s Pilot’s Watch Top Gun Collection, this limited edition timepiece is one of only 250 pieces produced worldwide. Featuring a bold 48.6mm black ceramic case, it’s a model that stands out, both in appearance and complexity—ideal for those who appreciate robust craftsmanship and precision.

Inside the IWC IW502903: Power and Precision

This model is powered by the Calibre 51614 automatic movement, boasting a suite of intricate functions, including:

• Date, day, month, and four-digit year display 
• Moon phase for both northern and southern hemispheres 
• Power reserve indicator 
• Perpetual calendar complications arranged entirely through mechanical programming 

Unlike typical perpetual calendar watches, the IW502903 features only a single crown, used for winding, time setting, and quick date adjustment. This streamlined design adds elegance—but also requires extra care during operation.

A Gentle Reminder for Owners of Complex Movements

One of the most common mistakes with this model is attempting to adjust the calendar beyond the current date. Due to its mechanical programming, the date cannot be wound backward without risking damage to the movement.

If you accidentally advance the date by a few days, the safest option is to pull out the crown to stop the movement, then wait until the actual date catches up. However, if the calendar is misaligned by more than a few days, we strongly recommend having it professionally adjusted. Complex mechanisms like this one require skilled hands and precision tools.

Your Go-To Expert for Luxury Watch Repairs in Hong Kong

Watches like the IWC IW502903 remind us why expert care is so crucial. Whether it’s a rare limited edition or a daily-wear classic, your timepiece deserves professional attention.

At AG Watch Repair Center, we specialize in handling high-end and complicated watches from top-tier brands like IWC, Rolex, Patek Philippe, Audemars Piguet, and more. Our experienced technicians understand the unique needs of every movement—ensuring accurate diagnosis, careful servicing, and long-lasting performance.

Got a watch issue or a question about maintenance?
We offer free inspections and quotations—just reach out and let us take care of the rest.

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Let your watch tell time—while we take care of everything else.