Seiko Cal. 5638 - 983

The 5638-983 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 19j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-ced8605c2e9c]

Also known as: UFO, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1983

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