Approximately 38mm diameter 1/20SEC chronograph mounted Men's model 
Brand description: Seiko is a global company that commercializes the world's first quartz watch and often participates in competitions such as the Olympics as an official sponsor official timer. It proves the quality of the Seiko brand. With the technology and precision cultivated over many years of history, the times are always ticked. This product is an overseas model, but because it is a domestic SEIKO purchase, it comes with a Japanese manual (not a copy) and a SEIKO BOX.