Seiko Cal. 6638 - 976

The Seiko 6638-976 represents an important milestone in Seiko's 1984 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-90bb57852a8e]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1984

Related Models

• Seiko 6345-541
• Seiko 4428-455
• Seiko 4458-277
• Seiko 5681-393
• Seiko 6168-741
• Seiko 4495-817
• Seiko 7078-834
• Seiko 6383-616
• Seiko 6134-223
• Seiko 4456-116
• Seiko 6183-341
• Seiko 6377-627