Seiko Cal. 4571 - 636

The Seiko 4571-636 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-51159a205be5]

Also known as: Tuna, Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1971

Related Models

• Seiko 3882-852
• Seiko 3857-773
• Seiko 0770-926
• Seiko 6181-663
• Seiko 4463-207
• Seiko 0742-605
• Seiko 3890-978
• Seiko 7024-316
• Seiko 7055-550
• Seiko 5285-886
• Seiko 6289-797
• Seiko 6348-857