Seiko Cal. 4520 - 103

The Seiko 4520-103 represents an important milestone in Seiko's 1995 lineup. It features a Black dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-1cbf505886c5]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1995

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