Seiko Cal. 6331 - 400

The 6331-400 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6331 caliber with 25j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-1f5543f493b2]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1991

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