Seiko Cal. 6657 - 180

This Hand-Winding model from 1998 features a 39mm Stainless Steel case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-a869a4b41833]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1998

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