Seiko Cal. 7131 - 387

The 7131-387 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-a8cdb34a33ec]

Also known as: Monster, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1986

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