Seiko Cal. 6690 - 920

The 6690-920 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6690 caliber with 27j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-07f988aca3b0]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1976

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