Seiko Cal. 5681 - 281

The Seiko 5681-281 represents an important milestone in Seiko's 1976 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-800db7e4dc24]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1976

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