Seiko Cal. 6331 - 797

This Automatic model from 1990 features a 41mm Two-Tone case. Powered by the 6331 caliber with 29j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-c0e811511e3f]

Also known as: Bullhead, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

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