Seiko Cal. 3817 - 328

The Seiko 3817-328 represents an important milestone in Seiko's 1995 lineup. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-969534f73a16]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1995

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