Seiko Cal. 4539 - 764

Released in 1975, the Cal. 4539 with design code 764 was part of Seiko's domestic market collection. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-c4795dfb94cb]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1975

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