Seiko Cal. 6657 - 406

The Seiko 6657-406 represents an important milestone in Seiko's 1987 lineup. It features a Cream dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-b62ef43f4392]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1987

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