Seiko Cal. 5612 - 683

The Seiko 5612-683 represents an important milestone in Seiko's 1990 lineup. It features a Black dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-1d5a7e8e2c8e]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1990

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