Seiko Cal. 5680 - 390

This Hand-Winding model from 1986 features a 39mm Stainless Steel case. With its 21mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-3ec9e1a81da8]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1986

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