Seiko Cal. 6631 - 804

The Seiko 6631-804 represents an important milestone in Seiko's 1967 lineup. Powered by the 6631 caliber with 24j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-ce5ec4601e4b]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1967

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