Seiko Cal. 6657 - 358

The Seiko 6657-358 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-3f02ab785991]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1980

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