Seiko Cal. 6681 - 721

The 6681-721 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-0e1b3ba1efa8]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1966

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