Seiko Cal. 6657 - 369

Released in 1975, the Cal. 6657 with design code 369 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-e67541af4ee0]

Also known as: Goldfeather, Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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