Seiko Cal. 7133 - 731

The Seiko 7133-731 represents an important milestone in Seiko's 1972 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-314df1a1333c]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1972

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