Frederique Constant Slimline Monolithic Manufacture vs Frederique Constant Slimline Hearts Beat Automatic 42mm

Side-by-side at a glance. Click a watch above to open the full reference page.

	Frederique Constant FC-710M4SH6	Frederique Constant FC-310WHTS5B6
Model	Slimline Monolithic Manufacture	Slimline Hearts Beat Automatic 42mm
Caliber	Frederique Constant Cal. FC-710 -- in-house manual-wind monolithic silicon oscillator, 115,200bph (incredible beat rate), 38h PR; used in Slimline Monolithic; no traditional hairspring	Frederique Constant Cal. FC-310 -- in-house automatic with heartbeat aperture, 28,800bph, 38h PR, 26j; partial dial aperture at 6 o'clock exposes the balance wheel; accessible FC manufacture
Case size	38.8mm	42mm
Lug-to-lug	44.5mm	n/a
Years produced	2019–present	2016–present
Brand tier	enthusiast	enthusiast
Era	modern	modern
Movement tier	Unclassified movement	Unclassified movement
Market median (excellent / full-set)	n/a	n/a
Typical range	n/a	n/a
Confidence	low	low
Categories	dress	dress
Editorial	yes	n/a