Seiko Cal. 6637 - 606

Released in 1990, the Cal. 6637 with design code 606 was part of Seiko's domestic market collection. With its 22mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-a2d783bc9bae]

Also known as: World Timer, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1990

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