Seiko Cal. 7131 - 645

The 7131-645 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-590a3feb56be]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1997

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