Seiko Cal. 5644 - 863

The 5644-863 is a sought-after Solar piece from Seiko's golden era. With its 21mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-eedbb559bb47]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1987

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