The Story Behind the Heart Beat Collection

In 1994, mechanical watchmaking was still climbing out of the shadow of the quartz era, and most brands that wanted to prove a watch was "real" mechanical simply skeletonized the whole movement. Frederique Constant took a different approach: a single, deliberate window cut into the dial at 12 o'clock, revealing just the balance wheel and escapement in continuous motion — the literal heartbeat of the watch. It was a quiet, confident way of saying "this is mechanical," and it became the brand's most recognizable design signature.

A decade later, in 2004, Frederique Constant used the Heart Beat concept to launch its first-ever in-house movement, the Caliber FC-910 — a milestone that made the brand one of a small group of true Swiss manufactures producing its own calibers rather than relying solely on outside suppliers. The aperture has appeared across dozens of Heart Beat references since, and the FC-335MC4P6 pairs that signature complication with a poetic moonphase display for one of the collection's most complete expressions.

Full Specifications

Caring for Your Heart Beat Moonphase Date and Buying With Confidence

The FC-335MC4P6 combines a mechanical movement, a genuine leather strap, and a moonphase complication that needs occasional attention — a few habits help keep it running true:

• Wind the movement by hand if the watch sits unworn for more than a day or two, since the 38-hour power reserve will otherwise run down.
• Reset the moonphase display periodically, as most mechanical moonphase complications drift by roughly one day every two to three years and need manual correction.
• Avoid submerging the watch; the 6 ATM (60m) rating covers splashes and rain, not swimming or diving.
• Keep the calfskin strap away from prolonged direct sunlight and moisture to prevent premature drying of the leather.
• Have the movement serviced through an authorized Frederique Constant service center on the manufacturer's recommended schedule.

Because the Heart Beat Moonphase Date is one of Frederique Constant's most recognizable references and tends to sell out quickly, buying from an authorized dealer is the most reliable way to secure one when it's back in stock. Every Heart Beat model sold at Lexor Miami is sourced directly through Frederique Constant's authorized distribution channel, arrives with its full manufacturer packaging and warranty documentation, and is backed by Lexor Miami's own 30-day return policy on unopened, unused merchandise.

Why Buy the Heart Beat Moonphase Date at Lexor Miami?

Lexor Miami is an authorized Frederique Constant dealer with a physical showroom at 2371 NW 20th St, Miami, FL, and more than 20 years of experience in the luxury watch and eyewear trade. Every Heart Beat model sold through Lexor Miami is 100% authentic, backed by the manufacturer's warranty, and ships with free shipping and free returns on qualifying orders once back in stock.

A Watch That Proves Its Own Pulse

The Frederique Constant Heart Beat Moonphase Date FC-335MC4P6 carries forward a design signature that has defined the brand since 1994 — a genuine window into a mechanical movement, paired here with a poetic moonphase complication. It's currently sold out at Lexor Miami, an authorized Frederique Constant dealer, but availability moves quickly once new stock arrives.

Questions in the meantime? Chat with a Lexor Miami specialist on WhatsApp or explore the full Frederique Constant Watches collection.