Seiko Cal. 6340 - 723

The Seiko 6340-723 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e3fa6f82f82e]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1972

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