Seiko Cal. 7138 - 552

The Seiko 7138-552 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-5b5a94bd0565]

Also known as: Panda, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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