Seiko Cal. 6318 - 667

Seiko 6318-667

The 6318-667 is a sought-after Solar piece from Seiko's golden era. Powered by the 6318 caliber with 28j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-c6a0c923fbf2]

Also known as: Sumo, Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
15.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1980

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