Seiko Cal. 7131 - 658

The 7131-658 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7131 caliber with 35j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-3b0af741c300]

Also known as: Sea Horse, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1990

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