Seiko Cal. 6318 - 707

The 6318-707 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6318 caliber with 26j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-f09af0e7ce33]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1976

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