Seiko Cal. 6331 - 785

The Seiko 6331-785 represents an important milestone in Seiko's 1970 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-b8ebc67241fb]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1970

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