Seiko Cal. 5688 - 928

The Seiko 5688-928 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-6c2776219466]

Also known as: Samurai, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1965

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