Seiko Cal. 6331 - 340

The Seiko 6331-340 represents an important milestone in Seiko's 1997 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-b5a9616b8afd]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1997

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