Seiko Cal. 5666 - 697

This Automatic model from 1984 features a 39mm Stainless Steel case. With its 18mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-f87dc9d8724d]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1984

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