🔹 Overview
The V Perpetual Calendar Ref# 4300V/000R-B509 is a triumph of technical finesse and timeless design. Introduced at SIHH 2019, this ultra-thin timepiece in 18K pink gold features a mesmerizing blue dial and a matching blue alligator leather strap, combining horological complexity with contemporary elegance. A refined continuation of the 2016 original, it offers the perpetual calendar function in a remarkably slim profile of just 8.1 mm

💎 Key Specifications
Brand: V Constantin
Model: Overseas Watch Perpetual Calendar Ultra-Thin Ref. # 4300V/000R-B509
Origin: Switzerland
Gender: Men’s
Case Size: 41.5 mm
Case Thickness: 8.1 mm
Case Material: 18K pink gold
Bezel: Fixed, polished 18K pink gold
Dial: Sunburst blue with pink gold applied hour markers and luminescent hands
Strap Type: Blue alligator leather strap
Crystal: Scratch-resistant sapphire
Water Resistance: 50 meters / 165 ft

⏱️ Movement
Caliber: V Constantin 1120 QP/1
Type: Self-winding mechanical ultra-thin movement
Power Reserve: Approximately 40 hours
Functions:
• Hours, minutes
• Day, date, month, leap year
• Perpetual calendar (no adjustment needed until 2100)
• Moonphase

✅ Conclusion
The V Perpetual Calendar Ref# 4300V/000R-B509 is an ultra-thin marvel that perfectly balances technical complexity with elegance. Its 18K pink gold case, sunburst blue dial, and matching alligator strap offer refined aesthetics, while the Calibre 1120 QP/1 ensures precision and reliability. With a perpetual calendar that requires no adjustment until 2100, this timepiece combines V Constantin’s watchmaking heritage with modern wearability, making it ideal for collectors and connoisseurs seeking sophistication and practicality