Seiko Cal. 7147 - 166

The Seiko 7147-166 represents an important milestone in Seiko's 1975 lineup. Powered by the 7147 caliber with 28j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-0c6d04b81c97]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1975

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