Seiko Cal. 5631 - 353

Released in 1970, the Cal. 5631 with design code 353 was part of Seiko's domestic market collection. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3fb2bd2071d4]

Also known as: Panda

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1970

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