Seiko Cal. 6639 - 108

The Seiko 6639-108 represents an important milestone in Seiko's 1995 lineup. With its 21mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-d18318bc89ba]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1995

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