Seiko Cal. 0754 - 633

The Seiko 0754-633 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-8766c79ec5d1]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1977

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