Seiko Cal. 6669 - 750

The Seiko 6669-750 represents an important milestone in Seiko's 1978 lineup. Powered by the 6669 caliber with 36j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-236581b95cbb]

Also known as: Helmet, Rally

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1978

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