Seiko Cal. 5666 - 639

The Seiko 5666-639 represents an important milestone in Seiko's 1977 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-5b84515f80e6]

Also known as: Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1977

Related Models

• Seiko 4474-266
• Seiko 6138-481
• Seiko 3840-150
• Seiko 6227-699
• Seiko 3840-981
• Seiko 6611-647
• Seiko 0786-535
• Seiko 5654-652
• Seiko 4544-121
• Seiko 6693-281
• Seiko 6166-593
• Seiko 3838-883