Seiko Cal. 6660 - 900

This Automatic model from 1970 features a 41mm Stainless Steel case. Powered by the 6660 caliber with 20j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-df8495531c66]

Also known as: Bellmatic, Navigator

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1970

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