Seiko Prospex x Automatic ft. 1970 Heritage aka Captain Willard Reissue Men Diver Tonneau 200m Water Resistant Watch SPB237J1 SPB237 SPB-237 SPB-237J1 Celebrate Seiko dive watch legacy with this Prospex Limited Edition, inspired by 1965-1970 fabric strap models. Featuring a vintage-inspired dial, modern 6R35 automatic movement (70h power reserve), and 200m water resistance, this collector piece blends retro aesthetics with professional dive performance. Includes a premium fabric strap for authentic heritage appeal. 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 fabric (polyester) band Water Resistance 200m / 660ft diver Case Size Thickness: 13.2 mm Diameter: 42.7 mm Length: 46.6 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. 1970 Heritage aka Captain Willard Reissue Made in Japan Additional fabric (polyester) band inclusive 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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