Seiko Cal. 5257 - 420

The Seiko 5257-420 represents an important milestone in Seiko's 1965 lineup. It features a Cream dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-e9f6bf6ce444]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1965

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