Zf IWC Portuguese Annual Calendar Watch, Model IW503501! Upgrade Details: 1. 44m

Zf IWC Portuguese Annual Calendar Watch, Model IW503501! Upgrade Details: 1. 44mm diameter, matching the original size! 2. Exclusive custom version with 5 movement functions synchronized with the original, displaying month, date, and day of the week; truly adjustable, the only version on the market to achieve full functionality. 3. Features a high-transparency coated sapphire crystal for an exceptional visual effect! 4. The case brushing process is comparable to other watches, perfectly finished. As a middle ground between perpetual calendar and regular calendar watches, this is bound to become a rising star! Highly recommended: Men's multi-functional mechanical watch DDD