Seiko Cal. 5661 - 533

The Seiko 5661-533 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8023c425fbd4]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1973

Related Models

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• Seiko 5620-133
• Seiko 4480-609
• Seiko 5632-425
• Seiko 5697-344
• Seiko 5263-912
• Seiko 3884-559
• Seiko 3841-571
• Seiko 5230-689
• Seiko 6126-578
• Seiko 4547-762
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