Seiko Cal. 6311 - 730

The Seiko 6311-730 represents an important milestone in Seiko's 1969 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-74393eb15ffe]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1969

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