Seiko Cal. 6331 - 961

Released in 1986, the Cal. 6331 with design code 961 was part of Seiko's domestic market collection. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-7dbd46dc2a5b]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1986

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