Seiko Cal. 6657 - 217

This Spring Drive model from 1980 features a 39mm Titanium case. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-47ecb606ffb0]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1980

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