Seiko Cal. 6681 - 376

The Seiko 6681-376 represents an important milestone in Seiko's 1966 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-e752e0c5aa31]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1966

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