Seiko Cal. 4451 - 674

This Spring Drive model from 1967 features a 40mm Two-Tone case. Powered by the 4451 caliber with 21j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-b9daefebcd78]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1967

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