Seiko Cal. 5645 - 677

The Seiko 5645-677 represents an important milestone in Seiko's 1984 lineup. It features a Black dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-b2daf8fecec6]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1984

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