Seiko Cal. 6651 - 831

This Automatic model from 1997 features a 43mm Two-Tone case. Powered by the 6651 caliber with 18j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-3d603fea4d75]

Also known as: Monster, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1997

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