The Frederique Constant Classics Moonphase FC-335MC4P5 is a fantastic Swiss Made mechanical (automatic) watch with a moonphase, date hand and an open heart (where you can see the movement running). Under the hood you can find the automatic (Swiss Made) FC-335 movement. Incredibly beautiful, stylish and suited for anyone that appreciated a classic watch with a some great complications. The case and the clasp have durable yellow gold PVD coating.