Seiko Cal. 6331 - 946

The 6331-946 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6331 caliber with 35j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-99df335cca6e]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1985

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