The TW4131 Cosmic Daytona is officially here. This is the true proprietary movement version of the 4131.The TW 4131 movement: It is developed directly based on the original 4131. The design is reasonable, and the stability is excellent.The Shanghai 4131 movement: It is modified from the 4130 movement that uses 7750 technology. For example, it features fake bridges and fake shock absorbers, which result in poor stability and difficult maintenance.Choosing the right version is very important, and more comparative information will be available soon! .Highly recommended-currently the most stable version in every aspect.
