Seiko Cal. 4521 - 407

The Seiko 4521-407 represents an important milestone in Seiko's 1965 lineup. Powered by the 4521 caliber with 22j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-8fed619c8998]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1965

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