Seiko Cal. 6657 - 726

The Seiko 6657-726 represents an important milestone in Seiko's 1972 lineup. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-a0d0333e7954]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1972

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