Seiko Cal. 6645 - 671

The Seiko 6645-671 represents an important milestone in Seiko's 1976 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-7e33fe01dc33]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1976

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