Seiko Cal. 5636 - 674

The Seiko 5636-674 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ff250e77958b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1991

Related Models

• Seiko 0741-937
• Seiko 6115-990
• Seiko 5268-604
• Seiko 7198-530
• Seiko 6154-551
• Seiko 6145-344
• Seiko 5672-311
• Seiko 3863-281
• Seiko 5627-904
• Seiko 5254-896
• Seiko 6651-483
• Seiko 3876-404