Seiko Cal. 5647 - 371

The Seiko 5647-371 represents an important milestone in Seiko's 1994 lineup. It features a Black dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-d6a7f1dd24eb]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1994

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