Seiko Cal. 4431 - 135

This Quartz model from 1970 features a 43mm Hardlex-Coated Steel case. Powered by the 4431 caliber with 32j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-4f00d8555522]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1970

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