Seiko Cal. 6631 - 526

The Seiko 6631-526 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-a525917bcba4]

Also known as: Shogun, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1970

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