Seiko Cal. 7147 - 660

The Seiko 7147-660 represents an important milestone in Seiko's 1966 lineup. Powered by the 7147 caliber with 36j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-95ed676d7da9]

Also known as: Helmet, Silverwave

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1966

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