Seiko Cal. 5663 - 973

The 5663-973 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5663 caliber with 33j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-3ee2aa0b9c26]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1994

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