Seiko Cal. 5644 - 685

The Seiko 5644-685 represents an important milestone in Seiko's 1972 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2314ed0e8405]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1972

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