Seiko Cal. 4528 - 163

This Spring Drive model from 1977 features a 41mm PVD Black case. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-37d119396f61]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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