Seiko Cal. 6637 - 125

The Seiko 6637-125 represents an important milestone in Seiko's 1972 lineup. Powered by the 6637 caliber with 22j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-accee58ce6e8]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1972

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