Seiko Cal. 5257 - 656

The Seiko 5257-656 represents an important milestone in Seiko's 1969 lineup. It features a Green dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-984bb1c0939d]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1969

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