Seiko Cal. 6331 - 443

The Seiko 6331-443 represents an important milestone in Seiko's 1999 lineup. Powered by the 6331 caliber with 19j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-45ef841819e0]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1999

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