Konstantin Chaykin is a Russian independent watchmaker based in Moscow and a member of the AHCI (Académie Horlogère des Créateurs Indépendants). His workshop designs and assembles its own complications and is known for playful, character-based dials in which the time indications form a face.
The best-known model is the Joker, whose eyes show the hours and minutes and whose mouth displays the moon phase; it has been issued in numerous variations. Related pieces include the Clown and Grimaldi the Clown, the Minions Watch and the Ventuno, along with unique pieces and small limited editions.