Seiko Cal. 6647 - 578

The 6647-578 is a sought-after Solar piece from Seiko's golden era. Powered by the 6647 caliber with 30j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-db3230cf7bf7]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1996

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