Seiko Cal. 6660 - 413

The Seiko 6660-413 represents an important milestone in Seiko's 1967 lineup. Powered by the 6660 caliber with 35j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-bfa0d9ea1dfd]

Also known as: Crown, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1967

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