Seiko Cal. 5684 - 410

The Seiko 5684-410 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-87a38716d5b0]

Also known as: Helmet, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1981

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