Seiko Cal. 5666 - 247

The Seiko 5666-247 represents an important milestone in Seiko's 1980 lineup. Powered by the 5666 caliber with 27j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-bd4011d56c98]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1980

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