Seiko Cal. 6690 - 491

The Seiko 6690-491 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-4bb327888d51]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1974

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