Seiko Cal. 5657 - 499

This Spring Drive model from 1965 features a 42mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-9b36d6c95233]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1965

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