Seiko Cal. 6690 - 431

The 6690-431 is a sought-after Solar piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-c0c8887607d4]

Also known as: Turtle

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1980

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