Seiko Cal. 7139 - 523

The Seiko 7139-523 represents an important milestone in Seiko's 1974 lineup. Powered by the 7139 caliber with 19j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-b8aeee0df30a]

Also known as: Monster, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1974

Related Models

• Seiko 5678-230
• Seiko 4586-552
• Seiko 4589-599
• Seiko 6183-556
• Seiko 7199-371
• Seiko 4459-701
• Seiko 4581-859
• Seiko 4478-123
• Seiko 7186-508
• Seiko 4415-165
• Seiko 3820-560
• Seiko 4430-982