Seiko Cal. 6639 - 250

The Seiko 6639-250 represents an important milestone in Seiko's 1969 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-ad0b4d283903]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1969

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