Seiko Cal. 4490 - 635

This Spring Drive model from 1979 features a 42mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-eb16f34a05b9]

Also known as: Turtle, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1979

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