Seiko Cal. 4521 - 544

The Seiko 4521-544 represents an important milestone in Seiko's 1971 lineup. It features a Cream dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-fe8b6ada7bb3]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1971

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