Seiko Cal. 5640 - 476

The Seiko 5640-476 represents an important milestone in Seiko's 1990 lineup. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-e9760b7479d5]

Also known as: Monster, Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1990

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