The Piaget 38mm Altiplano 900P had to take an entirely new approach to construction in order to achieve its amazing 3.65mm profile. Most significantly, the case is directly integrated into the movement instead of there being a discrete movement placed inside a separate case. The back of the case also serves as the baseplate for the movement. Additionally, the bridges make up most of the dial, with the actual "dial" sitting in the top left, flush with the rest of the bridges to cut down on height.
The Piaget 38mm Altiplano 900P had to take an entirely new approach to construction in order to achieve its amazing 3.65mm profile. Most significantly, the case is directly integrated into the movement instead of there being a discrete movement placed inside a separate case. The back of the case also serves as the baseplate for the movement. Additionally, the bridges make up most of the dial, with the actual "dial" sitting in the top left, flush with the rest of the bridges to cut down on height.