Seiko 5 Sport World Time 'Orange Sunburst' Ref. SRP129 (Variant with World Time bezel)
World Time / Sport Watch · Seiko (Seiko Group); Seiko 5 Sports line. Positioned as an entry-level enthusiast brand with a reputation for extreme durability and value.
Period: Modern Tool Watch (2010s). Characterized by bold colors and GMT/World Time functionality popular in the early 21st-century Seiko 5 lineup.
Type
World Time / Sport Watch
Brand
Seiko (Seiko Group); Seiko 5 Sports line. Positioned as an entry-level enthusiast brand with a reputation for extreme durability and value.
Movement
Seiko Caliber 4R36 Automatic Movement; 21,600 bph, approximately 41-hour power reserve, 24 jewels, hacking and hand-winding capabilities.
Dimensions
Case Diameter: 42mm; Thickness: 13mm; Lug-to-Lug: 48mm; Lug Width: 20mm.
Description
An eye-catching and functional sports watch, this Seiko 5 combines the utility of a world timer with a high-visibility orange dial. It serves as an accessible entry point into mechanical complications, offering GMT functionality via the bezel and a robust automatic movement visible through the back.
Key Features
Bold orange sunburst dial; red World Time city bezel; 4R36 hacking/winding movement; day-date complication with dual-language wheel (e.g., English/Spanish).
Dial Description
Bright orange sunburst dial with a gradient effect; applied luminescent indices and oversized Arabic numerals at 12, 4, and 8; baton hands with Lumibrite; day-date window at 3 o'clock.
Case Material
Stainless steel with a mix of brushed and polished finishes; features a fixed or rotating external world time bezel.
Crystal Type
Hardlex Mineral Crystal (Seiko proprietary); flat surface without AR coating.
Bezel Details
Red world time bezel insert featuring city abbreviations (LON, PAR, CAI, JED, etc.); likely aluminum insert on stainless steel base.
Crown & Pushers
Standard push-pull crown located at 3 o'clock; no crown guards; features a knurled texture for grip.
Bracelet or Strap
Three-link stainless steel 'Oyster-style' bracelet with a folding clasp and safety release; brushed finish on the top surfaces.
Caseback Details
Exhibition/Display screw-down caseback revealing the 4R36 movement and gold-toned or standard steel rotor; mineral glass window.
Movement Type
Seiko Caliber 4R36 Automatic Movement; 21,600 bph, approximately 41-hour power reserve, 24 jewels, hacking and hand-winding capabilities.
Water Resistance
100 Meters (10 bar). Suitable for swimming and snorkeling but not recommended for high-impact water sports or scuba diving.
Origin & Provenance
Japanese design and movement; movement may be assembled in Japan (J-suffix) or Malaysia/KOREA (K-suffix) depending on the specific manufacturing batch.
Age Estimate
Circa 2011–2018. The use of the 4R36 movement and the specific World Time bezel aesthetic aligns with Seiko 5 releases of this decade.
Cultural Significance
Represents the 'workhorse' era of Seiko 5, where the brand transitioned to movements that allowed for manual winding, making them favorites for budget-conscious collectors.
Condition Notes
Fair to Good. Visible scratches on the bezel insert and case. Significant wear on the bracelet links. Crystal shows some minor surface abrasions. Dial and hands appear well-preserved.
Value Estimate
Market Value: $150–$250 USD on the secondary market. Factors include the vibrancy of the orange dial and the condition of the bezel insert.
Care & Maintenance
Service every 5-7 years; check gaskets every 2 years if used for swimming; clean bracelet with a soft brush and mild soap; avoid strong magnetic fields.
Similar Watches
Seiko SRPB89 (Blue version), Seiko 5 Sports 'SKX' Styled GMT (SSK001), Citizen Promaster Nighthawk.
Interesting Facts
The 'World Time' bezel allows users to calculate the time in different time zones by aligning their current time with their city, a complication rarely found at this price point outside of the Seiko 5 line.