Seiko Cal. 4431 - 699

This Quartz model from 1990 features a 36mm Titanium case. Powered by the 4431 caliber with 21j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-63e67de25f09]

Also known as: Bellmatic, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1990

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