Seiko Cal. 5631 - 990

This Solar model from 1993 features a 44mm PVD Black case. Powered by the 5631 caliber with 28j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-7caf396fa2c2]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1993

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