Seiko Cal. 6642 - 771

The Seiko 6642-771 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-8f8d4af672a0]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1982

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