Seiko Cal. 5231 - 653

The Seiko 5231-653 represents an important milestone in Seiko's 1968 lineup. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-9c22198c7204]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1968

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