Seiko Cal. 5681 - 303

The Seiko 5681-303 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-e723d33c3ec0]

Also known as: Bullhead, Crown

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1977

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