Seiko Cal. 7133 - 340

Seiko 7133-340

The 7133-340 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-2c350714023e]

Also known as: Helmet, UFO

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Burgundy
Jewels
20j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1972

Related Models

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