Seiko Cal. 5645 - 428

This Solar model from 1983 features a 37mm PVD Black case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a447c9afa4ab]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1983

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