Seiko Cal. 5639 - 134

Released in 1979, the Cal. 5639 with design code 134 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-0ef8fcc4e1c8]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1979

Related Models

• Seiko 0751-218
• Seiko 6158-139
• Seiko 7111-382
• Seiko 5256-554
• Seiko 4489-925
• Seiko 4453-363
• Seiko 5244-514
• Seiko 6137-248
• Seiko 6159-689
• Seiko 7095-326
• Seiko 0738-313
• Seiko 6648-720