Seiko Cal. 4523 - 657

The Seiko 4523-657 represents an important milestone in Seiko's 1977 lineup. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-be56ab30a0b0]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1977

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