Seiko Cal. 5645 - 538

The Seiko 5645-538 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-5a426368722f]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1977

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