Seiko Cal. 7131 - 880

The Seiko 7131-880 represents an important milestone in Seiko's 1966 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-b3f4f422749b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1966

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