Seiko Cal. 4417 - 442

This Hand-Winding model from 1975 features a 36mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-a96c9f2014d1]

Also known as: Monster, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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