Seiko Cal. 6637 - 240

The Seiko 6637-240 represents an important milestone in Seiko's 1999 lineup. With its 19mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-0034b2089c7d]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1999

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