Seiko Cal. 5663 - 187

The Seiko 5663-187 represents an important milestone in Seiko's 1981 lineup. Powered by the 5663 caliber with 22j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-77fbd608d6e1]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1981

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