Seiko 5 Sports SRPJ45 Regatta Timer
About This Watch
The Seiko 5 Sports SRPJ45 Regatta Timer represents Seiko's commitment to horological excellence. Powered by the Seiko 4R36 in a 42.5mm Stainless Steel case, this timepiece combines superior craftsmanship with practical functionality. Athletic design and robust construction serve active lifestyles with confidence. Water resistant to 100m with a retail price of $22, it offers compelling value among luxury timepieces. Seiko innovates across every price segment with over 140 years of expertise.
In-Depth Review
Seiko's 5 Sports collection has long represented an understated excellence in accessible mechanical watchmaking, and the SRPJ45 Regatta Timer exemplifies that philosophy while adding genuine sporting utility. The 42.5mm stainless steel case houses the proven Seiko 4R36 automatic movement—a workhorse caliber with a respectable 41-hour power reserve and 24 jewels—paired with a bidirectional rotating bezel designed specifically for regatta timing. The blue dial provides legibility and visual distinction without ostentation, while 100 meters of water resistance offers practical confidence for water sports beyond casual swimming. At its core, this is a tool watch with legitimate function, not merely decoration. The watch's Japanese manufacture and Seiko's production standards ensure reliability that outpaces many competitors at this price point.
The SRPJ45 appeals directly to sailors, yacht enthusiasts, and sports watch collectors who prioritize functionality over unnecessary complications. The regatta timer bezel serves serious purpose rather than novelty, making this watch genuinely useful for its intended purpose. Beyond the water, its clean aesthetics and robust construction make it equally at home in office or casual settings. Buyers appreciate Seiko's uncompromising approach to entry-level mechanical watches—no quartz shortcuts, no marketing mythology.
In the sub-$500 sports watch segment, the SRPJ45 competes effectively against alternatives like the Orient Kamasu or Citizen Promaster diver models. While both offer distinct aesthetics and occasional advantages, Seiko's regatta specialization and vertical manufacturing integration provide tangible value. The current market price of approximately $46 (far below MSRP) represents exceptional positioning for mechanically-minded collectors seeking genuine utility without pretense.
Specifications
Movement
| Movement Type | Automatic |
|---|---|
| Caliber | Seiko 4R36 |
| Power Reserve | 41 hours |
| Frequency | 21,600 vph |
| Jewels | 24 |
Case
| Case Diameter | 42.5mm |
|---|---|
| Case Thickness | 13.4mm |
| Case Material | Stainless Steel |
| Crystal | Hardlex |
| Bezel | Bidirectional rotating yacht timer |
| Dial Color | Blue |
| Lug Width | 20mm |
| Lug-to-Lug | 47.0mm |
Features
| Water Resistance | 100m / 328ft |
|---|---|
| Bracelet/Strap | Stainless steel bracelet |
| Clasp | Three-fold clasp |
| Weight | 150g |
| Complications |