Seiko Cal. 6345 - 331

The 6345-331 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6345 caliber with 34j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-6e6b54a7b85e]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1991

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