Description
Description
The SEIKO 5 SPORTS SBSA311 is a rare Heritage Design Re-creation Limited Edition that revives one of the most influential SEIKO 5 models from the late 1960s. Inspired by the original watch that helped establish the foundation of the SEIKO 5 SPORTS lineage, this modern reinterpretation faithfully recreates key vintage details, including the classic “5” emblem at 12 o’clock, the distinctive day-date display layout, the silver dial, and the bi-directional rotating bezel. Its compact 38.2 mm case diameter gives the watch an authentic retro presence while benefiting from modern SEIKO manufacturing standards.
Powered by the proven Caliber 4R36, the SBSA311 features a mechanical automatic movement with manual winding capability. The movement runs at 21,600 vibrations per hour, uses 24 jewels, and offers approximately 41 hours of power reserve when fully wound. A stop-seconds function allows more precise time setting, while the day-date display adds practical everyday convenience. This combination gives the watch the charm of traditional mechanical watchmaking without the need for battery replacement.
From a usability perspective, the SBSA311 is designed to be more than a collector’s display piece. The dual-curved Hardlex crystal preserves the vintage-inspired profile while offering everyday durability, and LumiBrite on the hands, indexes, and bezel improves visibility in low-light conditions. With 10 bar water resistance, a stainless steel bracelet, screw case back, and balanced 137g weight, it offers reliable daily wearability while maintaining its heritage character.
Limited to 9,999 pieces worldwide, with only 1,000 allocated to the Japanese domestic market, the SBSA311 is significantly more collectible than regular-production SEIKO 5 SPORTS models. Our store currently has only one unit available, and it is offered as a premium collector item due to its rarity, limited domestic availability, and strong enthusiast demand. Buyers can purchase with confidence: this is a 100% authentic genuine SEIKO 5 SPORTS SBSA311, not a custom build, homage, or aftermarket reproduction.
Rare JDM Limited Model / Only One Available / 100% Authentic Genuine SEIKO
Key Specifications
- Case: 44.7 × 38.2 × 12.3 mm, 137g, stainless steel construction
- Bezel: Bi-directional rotating bezel
- Band: Stainless steel bracelet, one-push three-fold clasp
- Water resistance: 10 bar / 100m
- Movement: Caliber 4R36 Mechanical Automatic, manual winding compatible
- Frequency: 21,600 vibrations per hour / 6 beats per second
- Jewels: 24 jewels
- Power: Automatic winding with manual winding; approx. 41-hour power reserve
- Accuracy: +45 to -35 seconds per day
- Display: Analog silver dial with vintage-style SEIKO 5 design
- Functions: Day display, date display, stop-seconds function, manual winding
- Special features: Heritage Design Re-creation, Limited Edition case back, serial number engraving, screw case back, rotating bezel, special presentation box
- Illumination: LumiBrite on hands, indexes, and bezel
- Glass: Dual-curved Hardlex crystal
- Origin: Japan Domestic Market (JDM)
- Warranty: 3-Year Manufacturer Warranty (Japan)
- Model Code: SBSA311
- Release Date: July 2025
- Limited Edition: 9,999 pieces worldwide / 1,000 pieces for Japan
Key Highlights
The SBSA311 stands out as a faithful modern recreation within the SEIKO 5 SPORTS collection. Its late-1960s inspiration, vintage “5” emblem, silver dial, compact case profile, and heritage-style bezel give it a much stronger collector identity than standard SEIKO 5 SPORTS models.
Its Caliber 4R36 automatic movement delivers practical mechanical performance with manual winding, stop-seconds functionality, 24 jewels, and an approx. 41-hour power reserve. For enthusiasts, this movement offers the tactile appeal of a traditional automatic watch while remaining easy to use for everyday wear.
On the wrist, the 38.2 mm case size gives the watch a vintage-correct feel, while the stainless steel bracelet, dual-curved Hardlex crystal, LumiBrite visibility, and 10 bar water resistance provide dependable modern usability. It is compact, wearable, and suitable for both daily use and collection ownership.
Within the SEIKO 5 SPORTS SKX Series, the SBSA311 is a highly distinctive JDM limited model. With only 1,000 pieces allocated to Japan and only one unit currently available from our store, it is a rare opportunity for buyers seeking an authentic SEIKO heritage reissue with strong collectible appeal.
Short Promo Line
Rare JDM Limited Model / Only One Available / 100% Authentic Genuine SEIKO