Seiko Cal. 5631 - 621

This Solar model from 1986 features a 37mm Two-Tone case. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-f04a95fce3d3]

Also known as: Turtle

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1986

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