Seiko Cal. 6690 - 820

The 6690-820 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6690 caliber with 27j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-55564fdb3a38]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1978

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