Seiko Cal. 6643 - 677

The Seiko 6643-677 represents an important milestone in Seiko's 1986 lineup. It features a Cream dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-8fc1dd299a28]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1986

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