Seiko Cal. 0730 - 550

This Spring Drive model from 1968 features a 43mm Two-Tone case. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-2de4ca1e6a8b]

Also known as: Shogun, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1968

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