Seiko Cal. 4521 - 418

The Seiko 4521-418 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-dbcbba9463e2]

Also known as: Bellmatic, Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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