Seiko Cal. 6647 - 344

The 6647-344 is a sought-after Solar piece from Seiko's golden era. Powered by the 6647 caliber with 23j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-8ad87e1507e2]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1987

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