Seiko Cal. 5631 - 710

This Solar model from 1982 features a 46mm PVD Black case. Powered by the 5631 caliber with 28j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-4162a3c3a444]

Also known as: Monster, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1982

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