Seiko Cal. 4578 - 320

The Seiko 4578-320 represents an important milestone in Seiko's 1991 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4924358d42ee]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1991

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