Seiko Cal. 4431 - 776

This Spring Drive model from 1980 features a 40mm Gold-Plated case. Powered by the 4431 caliber with 30j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-97736ddde6e9]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1980

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