Worth buying. According to the information of seiko watch official website, when seiko watch assembled overseas, it adopted strict manufacturing technology and quality control, and each watch underwent strict inspection and testing to ensure the quality and performance of the watch. No matter in design, material, technology or performance, it has maintained the consistent high quality and high performance of Seiko watches. Seiko No.5 series is famous for its thousand yuan mechanical diving watch. It is the most cost-effective watch series. The global sales volume is very large, and the movement is mainly assembled with 4R series movements.