Seiko Cal. 5631 - 383

The Seiko 5631-383 represents an important milestone in Seiko's 1985 lineup. Powered by the 5631 caliber with 21j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-5c2438e72ee2]

Also known as: Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1985

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