Seiko Cal. 4520 - 747

The Seiko 4520-747 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-534196482f50]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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