Seiko Cal. 5690 - 321

The Seiko 5690-321 represents an important milestone in Seiko's 1995 lineup. With its 18mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-8a067b226079]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1995

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