描述
Piaget G0A43121, with a new 41mm diameter, is the world's thinnest mechanical watch. It has a box and certificate in 2021 and has been extended to 2029. This watch is the thinnest automatic chain watch with a case thickness of only 4.3mm. The case serves as the main clamp and is fitted with 219 thin parts. Some gears are only 0.12mm thick, making it a model of watchmaking technology and a good price.