Seiko Cal. 3847 - 721

The 3847-721 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-1ac5477868ae]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1982

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