Seiko Cal. 3825 - 704

The Seiko 3825-704 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d0c1f8747b96]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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