Seiko Cal. 6340 - 638

The Seiko 6340-638 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-c6a25ae97ec0]

Also known as: Crown, Flighty

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1977

Related Models

• Seiko 7187-406
• Seiko 7081-847
• Seiko 5261-597
• Seiko 7198-178
• Seiko 5296-154
• Seiko 7028-677
• Seiko 6137-731
• Seiko 6374-920
• Seiko 6332-995
• Seiko 5689-302
• Seiko 4484-981
• Seiko 3886-378