Seiko Cal. 6644 - 391

This Spring Drive model from 1987 features a 46mm Two-Tone case. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-068ef4815cf4]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1987

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