Seiko Cal. 5645 - 528

The Seiko 5645-528 represents an important milestone in Seiko's 1982 lineup. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-77c66bb163e7]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1982

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