Seiko Cal. 6678 - 465

The Seiko 6678-465 represents an important milestone in Seiko's 1981 lineup. Powered by the 6678 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-d67fd79b3d58]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1981

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