Seiko Cal. 6637 - 196

This Quartz model from 1966 features a 39mm Two-Tone case. Powered by the 6637 caliber with 18j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-9066a9bad157]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1966

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