Seiko Cal. 6660 - 839

The Seiko 6660-839 represents an important milestone in Seiko's 1969 lineup. It features a Navy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-8c90e8578bd2]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1969

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