Seiko Cal. 5663 - 820

The 5663-820 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-3f12971583d5]

Also known as: Samurai, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1965

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