Seiko Cal. 6663 - 356

Seiko 6663-356

The Seiko 6663-356 represents an important milestone in Seiko's 1975 lineup. Powered by the 6663 caliber with 30j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-b9e26fb781e5]

Also known as: Navigator, Baby Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
12.1mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Champagne
Jewels
30j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1975

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