Seiko Cal. 7181 - 637

This Solar model from 1988 features a 36mm PVD Black case. Powered by the 7181 caliber with 21j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-1b6fd7982df5]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1988

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