Seiko Cal. 0720 - 391

The Seiko 0720-391 represents an important milestone in Seiko's 1973 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-f1ba84bc4674]

Also known as: Sumo, Navigator

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1973

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