Seiko Cal. 6647 - 578

Seiko 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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