Seiko Cal. 0723 - 228

This Spring Drive model from 1983 features a 35mm PVD Black case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-15f46c4ab51d]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1983

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