Seiko Cal. 0731 - 318

The Seiko 0731-318 represents an important milestone in Seiko's 1968 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-0a75c986cf53]

Also known as: Sumo, Goldfeather

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1968

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