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Seiko Prospex

SPB301J1 (STO) [O]

SPB301J1 (STO) [O]

$1,962
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Seiko Prospex x Automatic ft. 1970 Heritage aka Captain Willard Reissue aka Save The Ocean (STO) (Special Edition) Men Diver Tonneau 200m Water Resistant Watch SPB301J1 SPB301 SPB-301 SPB-301J1

The Seiko Prospex SPB301 redefines modern diving with its 42mm stainless steel case, bold silver dial, and robust 6R35 movement (70h power reserve). Featuring 200m water resistance, a unidirectional bezel, and lumibrite markers, this professional-grade tool watch blends rugged functionality with sleek, contemporary aesthetics for serious adventurers.

Caliber Number / Movement
6R35 (automatic with manual winding capacity)

Power Reserve / Accuracy
Approximately 70 hours (+25 to -15 seconds per day)

Crystal
Sapphire crystal (curved, anti-reflective coating)

Luminous
LumiBrite on hands, indexes and bezel

Case / Band Material
Stainless steel case with stainless steel band (three-fold clasp with secure lock, push-button release with extender)

Water Resistance
200m / 660ft diver

Case Size
Thickness: 13.2 mm
Diameter: 42.7 mm
Length: 46.4 mm
Lug width: 20.0 mm

Other Specifications
Seiko Prospex x Automatic ft. 1970 Heritage aka Captain Willard Reissue aka Save The Ocean (STO) (Special Edition)
Made in Japan
SPECIAL EDITION on the case back
Unidirectional rotating bezel
Screw-down crown
Screw case back
24 jewels
Date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)

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