Seiko Cal. 6657 - 851

The Seiko 6657-851 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-acd837745a41]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1994

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