Seiko Cal. 5643 - 281

The Seiko 5643-281 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-03515a895240]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1971

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