Seiko Cal. 6391 - 438

The Seiko 6391-438 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-deb4c3f4d3f9]

Also known as: Pogue

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

Related Models

• Seiko 6398-570
• Seiko 7045-586
• Seiko 4513-766
• Seiko 3861-605
• Seiko 4469-262
• Seiko 6614-380
• Seiko 7043-100
• Seiko 5295-341
• Seiko 0771-149
• Seiko 7014-916
• Seiko 7169-477
• Seiko 7065-246