Seiko Cal. 4550 - 525

The Seiko 4550-525 represents an important milestone in Seiko's 1972 lineup. With its 18mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-9a493616106b]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1972

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