Seiko Cal. 6391 - 673

This Solar model from 1975 features a 45mm Two-Tone case. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-655b4ac64860]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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