Seiko Cal. 6657 - 650

This Automatic model from 1969 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-724d34c869cf]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1969

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