Seiko Cal. 6637 - 922

This Solar model from 1978 features a 42mm Titanium case. Powered by the 6637 caliber with 34j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-70e0616aa780]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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