Seiko Cal. 5663 - 668

The 5663-668 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5663 caliber with 28j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-4d9c310d2c7f]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1983

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