Seiko Cal. 4550 - 153

The Seiko 4550-153 represents an important milestone in Seiko's 1974 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6879934b3e3f]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1974

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