Frederique Constant Classics Heart Beat Automatic 40mm (FC-310MS5B6)

Selling my authentic Frédérique Constant Classics Heart Beat Automatic wristwatch (Reference FC-310MS5B6) in great condition. Features Frédérique Constant's signature open-heart aperture at 12 o'clock, letting you view the Swiss mechanical balance wheel in motion.

Key Specifications:

Movement: Swiss-made Calibre FC-310 automatic self-winding movement (26 jewels, 28,800 vph, ~38–40 hour power reserve)

Case: 40mm polished stainless steel case with scratch-resistant convex sapphire crystal and transparent exhibition caseback

Dial: Silver dial featuring a classic Clous de Paris guilloché centre and black Roman numeral hour markers
Strap: Original black calfskin leather strap with crocodile-pattern embossing (20mm lug width) and stainless steel pin buckle

Water Resistance: 50m / 5 ATM

Condition & Included:
Runs smoothly, winds cleanly, and keeps accurate time. Carefully worn and well maintained. Full box and papers.