Seiko Cal. 6637 - 672

Released in 1991, the Cal. 6637 with design code 672 was part of Seiko's domestic market collection. With its 19mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-bc93ed3883ee]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1991

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