Seiko Cal. 7055 - 139

The 7055-139 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-09ba9013afda]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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