



SEIKO PROSPEX SPEEDTIMER MECHANICAL - SPB513J1
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Seiko's Prospex Speedtimer line has long reflected the brand’s ties to motorsport and its enduring commitment to precision. For 2025, Seiko builds on this legacy by celebrating its shared history with the Japanese carmaker Datsun, a partnership that harks back to the golden era of the late 1960s and early 1970s. Alongside the special Datsun-themed limited edition time-and-date SPB517, Seiko introduces two new references of the model, the SPB513 and SPB515, blending vintage-inspired design with practical timing features in a refined everyday sports watch.
Movement
Caliber Number
6R55
Movement Type
Automatic with manual winding
Precision
+25 to -15 seconds per day
Power reserve
Approx. 72 hours (3 days)
Exterior
Case Material
Stainless steel (super hard coating)
Case Size
Thickness: 12.0mm
Diameter: 39.5mm
Lug-to-lug: 44.5mm
Crystal
Curved sapphire crystal
Crystal Coating
Anti-reflective coating on inner surface
LumiBrite
Lumibrite on hands, indexes and bezel
Clasp
Three-fold clasp with push button release
Distance between lugs
20mm
Other Details
Water Resistance
200m / 600ft diver's
Other Features
- Screw case back
- Stop second hand function
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3 Months Installment Plan
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