Seiko Cal. 5664 - 371

The Seiko 5664-371 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-71b0bbed867d]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1975

Related Models

• Seiko 6133-254
• Seiko 6152-414
• Seiko 6396-647
• Seiko 3847-812
• Seiko 4457-950
• Seiko 6116-350
• Seiko 5262-216
• Seiko 7110-749
• Seiko 6362-797
• Seiko 3858-106
• Seiko 5699-737
• Seiko 5646-890