Seiko Cal. 6647 - 987

The 6647-987 is a sought-after Solar piece from Seiko's golden era. Powered by the 6647 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-8a94fa348165]

Also known as: Pogue, Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1984

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