Seiko Cal. 6331 - 434

The Seiko 6331-434 represents an important milestone in Seiko's 1981 lineup. Powered by the 6331 caliber with 31j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-bd45ad50dd26]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1981

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