Seiko Cal. 4521 - 104

The Seiko 4521-104 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ac6cc33022dd]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1976

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