Seiko Cal. 6636 - 727

The 6636-727 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-eadc95ee7bf7]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1975

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