Seiko Cal. 5663 - 243

The Seiko 5663-243 represents an important milestone in Seiko's 1969 lineup. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-7c5e0f25db73]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1969

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