Seiko Cal. 6660 - 921

This Hand-Winding model from 1971 features a 36mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-8c3b4d66281d]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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