Seiko Cal. 7131 - 578

The 7131-578 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-348df86db364]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1971

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