Seiko Cal. 6638 - 782

The Seiko 6638-782 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-5e5ea24ebaf0]

Also known as: Monster, Rally

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1985

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