Seiko Cal. 7147 - 387

The Seiko 7147-387 represents an important milestone in Seiko's 1978 lineup. Powered by the 7147 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-334f35af87f4]

Also known as: Sumo, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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