Seiko Cal. 6378 - 553

This Spring Drive model from 1990 features a 37mm Titanium case. Powered by the 6378 caliber with 29j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-f376eb8aa1af]

Also known as: Monster, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1990

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