Seiko Cal. 4453 - 632

This Spring Drive model from 1968 features a 40mm Hardlex-Coated Steel case. Powered by the 4453 caliber with 22j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-585b42987d07]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1968

Related Models

• Seiko 0731-132
• Seiko 5614-953
• Seiko 5276-394
• Seiko 7139-117
• Seiko 6324-730
• Seiko 6663-558
• Seiko 7153-706
• Seiko 6392-794
• Seiko 4584-976
• Seiko 3883-697
• Seiko 4522-587
• Seiko 3821-638