Seiko Cal. 4557 - 365

The Seiko 4557-365 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-0b29c4792539]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1971

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