Seiko Cal. 6398 - 423

The Seiko 6398-423 represents an important milestone in Seiko's 1996 lineup. Powered by the 6398 caliber with 29j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-1dba911df24d]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1996

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