Seiko Cal. 6331 - 858

This Spring Drive model from 1998 features a 45mm Hardlex-Coated Steel case. Powered by the 6331 caliber with 29j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-be220c80dd31]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1998

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