Ultra-complicated Movement ST8235
The ST8235 is a watch featuring a coaxial tourbillon mechanism with a lunar phase complication positioned at 12 o'clock. The lunar phase refers to the changing appearance of the moon as observed from the Earth, illuminated by sunlight. As the moon moves across the sky from east to west each day, its shape changes continuously. By incorporating a lunar phase display into the watch, one can observe the changing shape of the moon each day throughout the month.