Seiko-5-Sport-SRPJ45K1 -Automatic-Male-Time Sonar

The Seiko 5 Sports SRPJ45K1 is a unique automatic watch inspired by the vintage Seiko “Time Sonar” design from the 1970s. It stands out with its semi-transparent blue dial that reveals parts of the day and date discs underneath, giving it a bold and technical look unlike traditional watches.

It is powered by the reliable Seiko Caliber 4R36 automatic movement, offering automatic and manual winding, hacking seconds, a day-date display, and approximately 41 hours of power reserve. The stainless-steel case measures 42.5mm and is paired with a durable bracelet designed for everyday wear.

Built for practicality, the SRPJ45K1 features LumiBrite-coated hands and markers for low-light visibility, a Hardlex crystal for durability, a unidirectional rotating bezel, and 100 meters of water resistance. It also has a transparent case back that showcases the mechanical movement inside.

With its distinctive see-through dial and vintage-inspired design, the SRPJ45K1 is one of the most eye-catching models in the Seiko 5 Sports lineup, perfect for those who want something different and expressive on the wrist.