Seiko Cal. 4551 - 355

This Spring Drive model from 1968 features a 46mm Titanium case. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-b55d5649f29c]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1968

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