Seiko Cal. 6690 - 568

The 6690-568 is a sought-after Solar piece from Seiko's golden era. Powered by the 6690 caliber with 21j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-b3cfa47a5b2e]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1976

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