Seiko Cal. 6320 - 831

The 6320-831 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6320 caliber with 25j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-f8b8c703a7b7]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1992

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