Seiko Cal. 6390 - 944

This Spring Drive model from 1998 features a 46mm Titanium case. Powered by the 6390 caliber with 18j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-96abfbd952e4]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1998

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