Seiko Cal. 4525 - 531

The Seiko 4525-531 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-311ed93226ce]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1978

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