Seiko Cal. 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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