Seiko Cal. 4539 - 310

This Quartz model from 1990 features a 42mm Two-Tone case. Powered by the 4539 caliber with 22j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-6460d3421f29]

Also known as: World Timer, Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1990

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