**Seiko 5 Sports SRPJ45 "Time Sonar" Skeleton Style**

Inspired by Seiko's legendary **1970s Time Sonar**, the Seiko 5 Sports SRPJ45 blends vintage design with modern reliability. Its standout feature is a stunning **translucent turquoise dial** that reveals the rotating day and date discs beneath, creating a unique layered effect rarely seen on modern watches. Framed by a striking bi-color unidirectional bezel, the SRPJ45 offers unmistakable retro style while maintaining the rugged DNA of the iconic SKX series. ([Seiko USA][1])

Powered by Seiko's trusted **4R36 automatic movement** with manual winding and hacking seconds, the watch delivers approximately **41 hours of power reserve**. The 42.5mm stainless steel case features a Hardlex crystal, LumiBrite hands and markers, a screw-down exhibition caseback, and 100 meters (10 BAR) of water resistance, making it equally at home as an everyday wear or weekend adventure companion. 

A favorite among Seiko enthusiasts, the SRPJ45 captures the spirit of one of Seiko's most distinctive vintage designs while offering the durability and reliability expected from the modern Seiko 5 Sports collection. Whether you're a collector or simply appreciate unique dial designs, the "Time Sonar" tribute is an eye-catching addition to any watch collection.

**Specifications**

* Model: Seiko 5 Sports SRPJ45
* Movement: Seiko Caliber 4R36 Automatic (24 jewels)
* Manual winding & hacking seconds
* Approx. 41-hour power reserve
* 42.5mm stainless steel case
* Translucent turquoise "Time Sonar" style dial
* Bi-color unidirectional rotating bezel
* Hardlex crystal
* Exhibition caseback
* LumiBrite hands and markers
* Day/Date display
* Stainless steel bracelet with locking deployant clasp
* Water Resistance: 100m / 10 BAR ([Seiko USA][1])