Seiko Cal. 6340 - 731

The Seiko 6340-731 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-c9ae0e5625c8]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1981

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