Seiko Cal. 6331 - 440

The Seiko 6331-440 represents an important milestone in Seiko's 1993 lineup. Powered by the 6331 caliber with 26j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-025d6ed536d3]

Also known as: UFO, Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1993

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