Seiko Cal. 7131 - 461

Released in 1981, the Cal. 7131 with design code 461 was part of Seiko's domestic market collection. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-48ca756ae20f]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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