Seiko Cal. 5639 - 679

The Seiko 5639-679 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-4e3fb49ecb7f]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1969

Related Models

• Seiko 3871-764
• Seiko 3839-452
• Seiko 4551-549
• Seiko 0762-116
• Seiko 7181-262
• Seiko 6139-405
• Seiko 5685-580
• Seiko 6647-665
• Seiko 6162-532
• Seiko 7158-121
• Seiko 6136-451
• Seiko 4527-469