Seiko Cal. 4523 - 638

The Seiko 4523-638 represents an important milestone in Seiko's 1988 lineup. Powered by the 4523 caliber with 19j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-299d1b07b19e]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1988

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