Seiko Cal. 5631 - 220

This Solar model from 1985 features a 36mm Titanium case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a5b52cb0eb21]

Also known as: Sumo, Flighty

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1985

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