Seiko Cal. 6636 - 637

The 6636-637 is a sought-after Quartz piece from Seiko's golden era. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2503b69c6d59]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1974

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