Seiko Cal. 6620 - 978

Seiko 6620-978

The 6620-978 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6620 caliber with 20j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-a53ab1ab7601]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
41mm
Case Thickness
14.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
200m
Dial Color
White
Jewels
20j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1985

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seikata-wm-a53ab1ab7601