Seiko Cal. 7057 - 442

This Spring Drive model from 1985 features a 44mm Stainless Steel case. Powered by the 7057 caliber with 34j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-79c5bbef8d7f]

Also known as: Turtle, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1985

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