Seiko Cal. 6131 - 864

Released in 1972, the Cal. 6131 with design code 864 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-ad409ddf3c54]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1972

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