Seiko Cal. 6397 - 274

The Seiko 6397-274 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-fab33dd59e85]

Also known as: Sumo, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1979

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