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Seiko Prospex

[D] SPB157J1

[D] SPB157J1

  • This product is discontinued / fully sold out and no longer available

Seiko Prospex x Automatic ft. Baby Alpinist Men Formal Round 200m Water Resistant Watch SPB157J1 SPB157 SPB-157 SPB-157J1

Discover the Seiko SPB157J1, affectionately known as the Baby Alpinist for its compact 38mm size and mountaineering heritage inspired by Seiko 1959 Alpinist. This refined field watch features a stunning sunburst dial, 200m water resistance, and the reliable 6R35 movement - blending vintage charm with modern performance. Perfect for collectors and outdoor enthusiasts seeking a versatile, heritage-rich timepiece.

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 and indexes

Case / Band Material
Stainless steel case with leather (calfskin) band (three-fold clasp with push-button release)

Water Resistance
200m / 20 bar

Case Size
Thickness: 12.9 mm
Diameter: 38.0 mm
Length: 46.0 mm
Lug width: 20.0 mm

Other Specifications
Seiko Prospex x Automatic ft. Baby Alpinist
Made in Japan
See-through case back
Screw-down crown
Screw case back
24 jewels
Date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)

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