Seiko Cal. 6320 - 131

This Spring Drive model from 1979 features a 45mm Two-Tone case. Powered by the 6320 caliber with 27j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-b42b001b3238]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1979

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