Seiko Cal. 6638 - 849

The Seiko 6638-849 represents an important milestone in Seiko's 1984 lineup. With its 21mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-f9afe48f7140]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1984

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