Seiko Cal. 6660 - 557

This Hand-Winding model from 1997 features a 39mm Two-Tone case. With its 19mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-47f5fbfa06eb]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1997

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