Among watchmakers it is good practice to balance wheels and other rotating parts. Mechanics “dislike” unbalanced devices. Konstantin Chaykin constantly solves problems of this kind. Once he had a cheerful idea: to balance a wheel by giving it the shape of a smiley. Unsurprisingly, the smiling “Happy Wheel” is in spirit very close to the Wristmon design, so one day such a wheel may well become part of the mechanism of a new model in the collection.