Seiko Cal. 0721 - 851

The Seiko 0721-851 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-456298c45e87]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1965

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