Seiko Cal. 3888 - 661

This Spring Drive model from 1989 features a 40mm Two-Tone case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-107c66e7f187]

Also known as: Tuna, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1989

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