Seiko Cal. 5636 - 797

This Spring Drive model from 1974 features a 39mm Hardlex-Coated Steel case. Powered by the 5636 caliber with 22j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-938e0f8ac56d]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1974

Related Models

• Seiko 4439-268
• Seiko 4471-978
• Seiko 5249-359
• Seiko 6232-316
• Seiko 5672-963
• Seiko 4584-262
• Seiko 3898-958
• Seiko 5285-868
• Seiko 5250-762
• Seiko 5697-881
• Seiko 4591-396
• Seiko 5260-283