Seiko Cal. 6657 - 170

This Spring Drive model from 1977 features a 41mm PVD Black case. It features a White dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-be5d4c22d2c7]

Also known as: Turtle, Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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