Seiko Cal. 5661 - 667

The Seiko 5661-667 represents an important milestone in Seiko's 1965 lineup. Powered by the 5661 caliber with 18j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-cafaf2bea92a]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1965

Related Models

• Seiko 3821-777
• Seiko 6183-644
• Seiko 7058-683
• Seiko 3857-430
• Seiko 4469-277
• Seiko 6316-837
• Seiko 6677-150
• Seiko 6657-498
• Seiko 0728-606
• Seiko 6255-223
• Seiko 4528-439
• Seiko 6680-717