Seiko Cal. 6639 - 683

The Seiko 6639-683 represents an important milestone in Seiko's 1985 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-b82c4dad4cae]

Also known as: Monster, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1985

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