Seiko Cal. 6310 - 725

The Seiko 6310-725 represents an important milestone in Seiko's 1965 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-746afadb5653]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1965

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