Seiko Cal. 6657 - 502

This Spring Drive model from 1999 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-401cbd951462]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1999

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