Seiko Cal. 5657 - 691

This Automatic model from 1982 features a 44mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-abefa7a0efe9]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1982

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