Seiko 5 Sports SRPJ45K1 “Time Sonar” Automatic Watch

The Seiko 5 Sports SRPJ45K1 “Time Sonar” is a bold modern reissue inspired by Seiko’s iconic 1970s Time Sonar collection. Its translucent teal skeleton-style dial reveals the rotating day and date discs beneath the surface, creating depth and motion rarely seen in this price segment.

Powered by the proven Seiko 4R36 automatic movement, the watch supports manual winding, hacking seconds, and delivers a 41-hour power reserve. The robust stainless steel case, unidirectional bezel, and Hardlex crystal make it suitable for everyday wear while maintaining a strong street-sport aesthetic.

A standout piece for collectors who appreciate Japanese engineering, vintage inspiration, and contemporary design.

⚙️ TECHNICAL SPECIFICATIONS

• Brand: Seiko

• Collection: Seiko 5 Sports

• Model / Reference: SRPJ45K1

• Movement: Automatic Caliber 4R36

• Power Reserve: Approx. 41 hours

• Case Diameter: 42.5 mm

• Case Material: Stainless Steel

• Bezel: Unidirectional Rotating

• Dial: Translucent Teal Skeleton

• Crystal: Hardlex

• Water Resistance: 100 m / 330 ft

• Bracelet: Stainless Steel

• Functions: Hours, Minutes, Seconds, Day-Date (Kanji / English)

📦 WARRANTY & AUTHENTICITY

All watches sold by Ranch-Trade are 100% authentic and brand new.

✔ Delivered in a Tissot presentation box as shown in the images
✔ Includes 24-Month Ranch-Trade In-House Warranty
✔ Warranty covers manufacturing defects on movement, dial, and hands