Seiko Cal. 6657 - 617

This Automatic model from 1981 features a 40mm Titanium case. It features a White dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-ad8fc9b4d0ea]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1981

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