Seiko Cal. 5237 - 636

The Seiko 5237-636 represents an important milestone in Seiko's 1978 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-2010a464a1d7]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

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