Seiko Cal. 6657 - 257

This Spring Drive model from 1991 features a 39mm Two-Tone case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-93098d04fcf3]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1991

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