Seiko Cal. 6691 - 577

This Quartz model from 1965 features a 40mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-327064be7aaf]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1965

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