Seiko Cal. 5621 - 631

The Seiko 5621-631 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-bf958fdd53bc]

Also known as: Turtle, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1979

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