Seiko Cal. 6331 - 353

The Seiko 6331-353 represents an important milestone in Seiko's 1970 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-0fef8f3fd48c]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1970

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