Seiko Cal. 3890 - 648

This Hand-Winding model from 1979 features a 35mm Two-Tone case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-abf044b319dc]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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