Seiko Cal. 6331 - 320

The 6331-320 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6331 caliber with 36j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-4dae378da85f]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1997

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