Seiko Cal. 6378 - 440

This Quartz model from 1978 features a 46mm Titanium case. Powered by the 6378 caliber with 31j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-ccbeb0d22e03]

Also known as: UFO, World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1978

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