Seiko Cal. 7131 - 228

The Seiko 7131-228 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-69547e5bb880]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1970

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