Seiko Cal. 0731 - 840

The Seiko 0731-840 represents an important milestone in Seiko's 1996 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f12f0a056678]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1996

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