Seiko Cal. 5231 - 528

The Seiko 5231-528 represents an important milestone in Seiko's 1976 lineup. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-5da7ff3377d8]

Also known as: UFO, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1976

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