Seiko Cal. 6639 - 867

The Seiko 6639-867 represents an important milestone in Seiko's 1965 lineup. It features a Champagne dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-e0709f34f6b7]

Also known as: Monster, Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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