Seiko Cal. 6690 - 550

The Seiko 6690-550 represents an important milestone in Seiko's 1971 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-d513370a913f]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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