Seiko Cal. 4521 - 657

This Kinetic model from 1977 features a 41mm Hardlex-Coated Steel case. It features a Cream dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-ae135b1df1d8]

Also known as: Monster, Flighty

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1977

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