Seiko Cal. 6660 - 254

The Seiko 6660-254 represents an important milestone in Seiko's 1971 lineup. Powered by the 6660 caliber with 27j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-e22a6cf44557]

Also known as: Silverwave, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1971

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